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- 1. J.Am.Chem.Soc. 130, 48 (2008) , ACS , “Enhanced Ferromagnetism and Tunable Saturation Magnetization of Mn/C Codoped GaN Nanostructures Synthesized by Carbothermal Nitridation”, Zeyan Wang, Baibiao Huang, Lin Yu, Ying Dai, Peng Wang, Xiaoyan Qin, Xiaoyang Zhang, Jiyong Wei, Jie Zhan, Xiangyang Jing, Haixia Liu, and Myung-Hwan WhangboMn/C-codoped GaN nanostructures were synthesized by carbothermal nitridation with active charcoal as the carbon source. Nanostructures such as zigzag nanowires and nanoscrews were observed by varying the reaction time and the C/Ga molar ratio of the starting material used for the synthesis. The structures and morphologies of the as-grown samples were characterized by X-ray diffraction, scanning electron microscopy, and high-resolution transmission electron microscopy measurements. The doping of both Mn and C in the GaN matrix was confirmed by X-ray photoelectron spectroscopy measurements, and the ferromagnetic properties of Mn/C-codoped GaN samples were confirmed by room-temperature magnetization measurements. The saturation magnetization of Mn/C-codoped GaN increases steadily with increasing C/Ga molar ratio of the starting material at a rate of ~0.023 emu/g per C/Ga molar ratio, and the ferromagnetism of Mn/C-codoped GaN can be stronger than that of Mn-doped GaN by a factor of ~40. A plausible growth mechanism was proposed, and the role of carbon codoping in tuning the morphology and ferromagnetic property was discussed. Our work suggests that carbon doping in the GaN matrix favors the N sites over the Ga sites, Mn/C-codoping in the GaN matrix is energetically favorable, and the C-codoping strongly enhances the preference of the FM coupling to the AFM coupling between the two doped Mn sites. These suggestions were probed on the basis of first-principles density functional theory electronic structure calculations for a number of model doped structures constructed with a 32-atom 2 × 2 × 2 supercell. (Read more)
- 2. Phys. Rev. B 77, 195204 (2008) , “Identification of antisite carbon split-interstitial defects in 4H-SiC”, J. W. Steeds, W. SullivanA rich variety of optical centers with high energy local vibrational modes has been found in electron-irradiated 4H-SiC in both the as-irradiated and annealed states. These energies have been measured and the annealing dependence of the optical centers has been investigated by low-temperature... (Read more)
- 3. Phys. Rev. B 77, 195203 (2008) , “Creation and identification of the two spin states of dicarbon antisite defects in 4H-SiC”, J. W. Steeds, W. Sullivan, S. A. Furkert, G. A. Evans, P. J. WellmannThis paper deals with the positive identification by low-temperature photoluminescence microspectroscopy of the two spin states of the dicarbon antisites in 4H-SiC. The defects are created by high-dose electron irradiation at room temperature or by subsequent exposure to intense 325 nm radiation at... (Read more)
- 4. Phys. Rev. B 77, 085120 (2008) , “Identification of the carbon antisite in SiC: EPR of 13C enriched crystals”, Pavel G. Baranov, Ivan V. Ilyin, Alexandra A. Soltamova, and Eugene N. MokhovAn electron paramagnetic resonance spectrum with axial symmetry along c axis, spin S=1/2 and strong hyperfine interaction with one carbon atom has been observed in neutron-irradiated and annealed 6H-SiC, 13C isotope enriched. The 13C concentration was... (Read more)
- 5. phys. stat. sol. (b) 245, 1298-1314 (2008) , “EPR identification of intrinsic defects in SiC”, J. Isoya, T. Umeda, N. Mizuochi, N. T. Son, E. Janzen, T. OhshimaThe structure determination of intrinsic defects in 4H-SiC, 6H-SiC, and 3C-SiC by means of EPR is based on measuring the angular dependence of the 29Si/13C hyperfine (HF) satellite lines, from which spin densities, sp-hybrid ratio, and p-orbital direction can be determined over... (Read more)Si SiC diamond| EPR Theory electron-irradiation thermal-meas./anneal-exp.| +1 -1 0(neutral) 1.0eV~ 13C 29Si C1h C3v Carbon Csi D2d EI5/6 HEI1 HEI9/10 P6/7 Silicon T1 Td Tv2a V1/2/3 Vc Vsi antisite dangling-bond mono(=1) motional-effect n-type p-type pair(=2) quartet semi-insulating spin-relaxation triplet vacancy .inp files: SiC/Baranov/Baranov_g.inp SiC/EI5_C1h/5.inp SiC/EI5_C3v/5.inp SiC/EI6_RT/6.inp SiC/HEI10/HEI10a.inp SiC/HEI10/HEI10b.inp SiC/HEI1_C1h/1.inp SiC/HEI9/HEI9a.inp SiC/HEI9/HEI9b.inp SiC/SI5_C1h/4.inp SiC/Ky2/Ky2.inp SiC/Tv2a/Main.INP SiC/Vsi-_II_4H/Main.INP SiC/Vsi-_II_6H/Main.INP SiC/Vsi-_I_4H/Main.INP SiC/Vsi-_I_6H/Main.INP | last update: Takahide Umeda
- 6. Appl. Phys. Lett. 91, 133507 (2007) , “Identification of atomic-scale defect structure involved in the negative bias temperature instability in plasma-nitrided devices”, J. P. Campbell, P. M. Lenahan, A. T. Krishnan, and S. KrishnanWe utilize a very sensitive electron spin resonance technique called spin-dependent tunneling to identify defect centers involved in the negative bias temperature instability in plasma-nitrided p-channel metal-oxide-silicon field-effect transistors. The defect's 29Si hyperfine... (Read more)
- 7. Appl. Phys. Lett. 90, 123502 (2007) , “Observation of negative bias stressing interface trapping centers in metal gate hafnium oxide field effect transistors using spin dependent recombination”,The authors combine metal oxide semiconductor (MOS) gated diode measurements and very sensitive electrically detected electron spin resonance measurements to detect and identify negative bias temperature instability (NBTI) generated defect centers in fully processed HfO2 pMOS field effect... (Read more)
- 8. J. Appl. Phys. 102, 013530 (2007) , “Fluorine-vacancy complexes in Si-SiGe-Si structures”, D. A. Abdulmalik, P. G. Coleman, H. A. W. El Mubarek, and P. AshburnFluorine-vacancy (FV) complexes have been directly observed in the Si0.94Ge0.06 layer in a Si-SiGe-Si structure, using variable-energy positron annihilation spectroscopy (VEPAS). These complexes are linked to the significant reduction of boron diffusion in the SiGe layer via... (Read more)
- 9. J. Appl. Phys. 101, 013703 (2007) , “Electron spin resonance study of as-deposited and annealed (HfO2)x(SiO2)1−x high-κ dielectrics on Si”, B. B. Triplett, P. T. Chen, Y. Nishi, P. H. Kasai, J. J. Chambers, and L. ColomboElectron spin resonance measurements on 4 and 40 nm thick (HfO2)0.6(SiO2)0.4 and (HfO2)0.4(SiO2)0.6 high-κ films on (100)Si wafers detected Pb0 and Pb1... (Read more)
- 10. Phys. Rev. B 75, 245202 (2007) , “Identification of positively charged carbon antisite-vacancy pairs in 4H-SiC”, T. Umeda, J. Ishoya, T. Ohshima, N. Morishita, H. Itoh, and A. GaliAn antisite-vacancy pair and a monovacancy are a set of fundamental stable and/or metastable defects in compound semiconductors. Theory predicted that carbon antisite-vacancy pairs would be much more stable in p-type SiC than silicon vacancies and that they would be a common defect. However,... (Read more)
- 11. Phys. Rev. B 75, 195209 (2007) , “Mechanism and energetics of self-interstitial formation and diffusion in silicon”, Ramakrishnan Vaidyanathan, Michael Y. L. Jung, and Edmund G. SeebauerRecent work has suggested that prior determinations of diffusion mechanism and point defect thermodynamics in silicon have been affected by nonequilibrium effects stemming from uncontrolled adsorption-induced suppression of a pathway for defect creation at the surface. Through silicon self-diffusion... (Read more)
- 12. Phys. Rev. B 75, 085439 (2007) , “Real-space investigation of fast diffusion of hydrogen on Si(001) by a combination of nanosecond laser heating and STM”, C. H. Schwalb, M. Lawrenz, M. Dürr,, and U. HöferThe rearrangement of silicon dangling bonds induced by pulsed laser heating of monohydride-covered Si(001) surfaces has been studied by means of scanning tunneling microscopy (STM). The initial configurations, which were created by laser-induced thermal desorption, consist of isolated pairs of... (Read more)
- 13. Phys. Rev. B 75, 085208 (2007) , “Clustering of vacancy defects in high-purity semi-insulating SiC”, R. Aavikko, K. Saarinen, F. Tuomisto, B. Magnusson, N. T. Son, and E. JanzénPositron lifetime spectroscopy was used to study native vacancy defects in semi-insulating silicon carbide. The material is shown to contain (i) vacancy clusters consisting of four to five missing atoms and (ii) Si-vacancy-related negatively charged defects. The total open volume bound to the... (Read more)
- 14. Phys. Rev. B 75, 075306 (2007) , “Microcrack-induced strain relief in GaN/AlN quantum dots grown on Si(111)”, G. Sarusi, O. Moshe, S. Khatsevich, D. H. Rich, and B. DamilanoThe optical properties of vertically stacked self-assembled GaN/AlN quantum dots (QD's) grown on Si substrates were studied by means of temporally and spatially resolved cathodoluminescence (CL). An analysis of the CL spectra, thermal activation energies, and measured decay times of the QD... (Read more)
- 15. Phys. Rev. B 75, 075304 (2007) , “Damage evolution in low-energy ion implanted silicon”, R. Karmouch, Y. Anahory, J.-F. Mercure, D. Bouilly, M. Chicoine, G. Bentoumi, R. Leonelli, Y. Q. Wang, and F. SchiettekatteThe annealing of damage generated by low-energy ion implantation in polycrystalline silicon (poly-Si) and amorphous silicon (a-Si) is compared. The rate of heat release between implantation temperature and 350–500 °C for Si implanted in both materials and for different ions implanted in... (Read more)
- 16. Phys. Rev. B 75, 045210 (2007) , “Positron trapping kinetics in thermally generated vacancy donor complexes in highly As-doped silicon”, K. Kuitunen, K. Saarinen, and F. TuomistoWe have measured positron lifetime and Doppler broadening in highly As-doped silicon containing thermally generated V-As3 defect complexes (vacancy is surrounded by three arsenic atoms). We observe positron detrapping from the V-As3 defect complex and determine... (Read more)
- 17. Phys. Rev. B 75, 035309 (2007) , “Role of hydrogen in hydrogen-induced layer exfoliation of germanium”, J. M. Zahler, A. Fontcuberta i Morral, M. J. Griggs, Harry A. Atwater, and Y. J. ChabalThe role of hydrogen in the exfoliation of Ge is studied using cross-sectional transmission electron microscopy, atomic force microscopy, and multiple-internal transmission mode Fourier-transform infrared absorption spectroscopy and compared with the mechanism in silicon. A qualitative model for the... (Read more)
- 18. Phys. Rev. B 75, 035211 (2007) , “Self- and foreign-atom diffusion in semiconductor isotope heterostructures. II. Experimental results for silicon”, H. Bracht, H. H. Silvestri, I. D. Sharp, and E. E. HallerWe report the diffusion of boron, arsenic, and phosphorus in silicon isotope multilayer structures at temperatures between 850 °C and 1100 °C. The diffusion of all dopants and self-atoms at a given temperature is modeled with the same setting of all native-point-defect-related parameters.... (Read more)
- 19. Phys. Rev. Lett. 98, 216103 (2007) , “Influence of Cumulenic Chains on the Vibrational and Electronic Properties of sp-sp2 Amorphous Carbon”, L. Ravagnan, P. Piseri, M. Bruzzi, S. Miglio, G. Bongiorno, A. Baserga, C. S. Casari, A. Li Bassi, C. Lenardi, Y. Yamaguchi, T. Wakabayashi, C. E. Bottani, and P. MilaniWe report the production and characterization of a form of amorphous carbon with sp-sp2 hybridization (atomic fraction of sp hybridized species 20%) where the predominant sp bonding appears to be (=C=C=)n cumulene.... (Read more)
- 20. Phys. Rev. Lett. 98, 206406 (2007) , “Role of Intermolecular Coupling in the Photophysics of Disordered Organic Semiconductors: Aggregate Emission in Regioregular Polythiophene”, Jenny Clark, Carlos Silva, Richard H. Friend, and Frank C. SpanoWe address the role of excitonic coupling on the nature of photoexcitations in the conjugated polymer regioregular poly(3-hexylthiophene). By means of temperature-dependent absorption and photoluminescence spectroscopy, we show that optical emission is overwhelmingly dominated by weakly coupled H... (Read more)
- 21. Phys. Rev. Lett. 98, 095901 (2007) , “Experimental Evidence of the Vacancy-Mediated Silicon Self-Diffusion in Single-Crystalline Silicon”, Yasuo Shimizu, Masashi Uematsu, and Kohei M. ItohWe have determined silicon self-diffusivity at temperatures 735–875 °C based on the Raman shift of longitudinal optical phonon frequencies of diffusion annealed 28Si/30Si isotope superlattices. The activation enthalpy of 3.6 eV is obtained in such low temperature... (Read more)
- 22. Appl. Phys. Lett. 89, 191903 (2006) , “Vacancy self-trapping during rapid thermal annealing of silicon wafers”, Thomas A. Frewen and Talid SinnoThe density and spatial distribution of oxide precipitates within a crystalline silicon wafer is of paramount importance for microelectronic device yield. In this letter, the authors show how the formation of previously unconsidered, very small vacancy aggregates can explain macroscopic spatial... (Read more)
- 23. Appl. Phys. Lett. 89, 152123 (2006) , “Electrical characterization of defects introduced in n-type Ge during indium implantation”, F. D. Auret, P. J. Janse van Rensburg, M. Hayes, J. M. Nel, W. E. Meyer, S. Decoster, V. Matias, and A. VantommeThe authors have employed deep level transient spectroscopy to investigate the defects introduced in n-type Ge during 160 keV indium (In) ion implantation. Our results show that In implantation introduces three prominent electron traps with energy levels at... (Read more)
- 24. Appl. Phys. Lett. 89, 112121 (2006) , “Nature and stability of the (100)Si/LaAlO3 interface probed by paramagnetic defects”, A. Stesmans, K. Clémer, V. V. Afanas'ev, L. F. Edge, and D. G. SchlomElectron spin resonance analysis of (100)Si/LaAlO3 structures reveals the absence of a Si/SiO2-type interface in terms of archetypal Si-dangling bond-type Si/SiO2 interface defects (Pb0,Pb1). With no... (Read more)
- 25. Appl. Phys. Lett. 89, 092902 (2006) , “Charge trapping in nitrided HfSiO gate dielectric layers”, G. Vellianitis, Z. M. Rittersma, and J. PétryThe effects of HfSiO nitridation on charge trapping and long-term dielectric reliability are investigated. A comparison between decoupled plasma nitridation, annealing in NH3, and no nitridation is made. It was found that thinner HfSiO layers show less trapped charge. Decoupled plasma... (Read more)
- 26. Appl. Phys. Lett. 89, 092123 (2006) , “Accurate dependence of gallium nitride thermal conductivity on dislocation density”, C. Mion, J. F. Muth, E. A. Preble, and D. HanserThe authors experimentally find that the thermal conductivity of gallium nitride depends critically on dislocation density using the 3-omega technique. For GaN with dislocation densities lower than 106 cm2, the thermal conductivity is independent with dislocation... (Read more)
- 27. Appl. Phys. Lett. 89, 092120 (2006) , “Defect generation at SiO2/Si interfaces by low pressure chemical vapor deposition of silicon nitride”, Hao Jin, K. J. Weber, and P. J. SmithLow pressure chemical vapor deposition of Si3N4 on oxidized Si (111) surfaces causes a change in the properties of the dominant interface defect, the Pb center, observed by electron paramagnetic resonance. The change in the signature of the... (Read more)
- 28. Appl. Phys. Lett. 88, 261102 (2006) , “Light-emitting defects and epitaxy in alkali-ion-implanted α quartz”, J. Keinonen, S. Gsiorek, P. K. Sahoo, S. Dhar, and K. P. LiebLight-emitting centers in alkali-ion-implanted quartz have been investigated with respect to the solid phase epitaxial growth of the ion irradiation induced amorphous zone. Cathodoluminescence was studied under the conditions of chemical epitaxy in annealing the samples, implanted with... (Read more)
- 29. Appl. Phys. Lett. 88, 092108 (2006) , “Hydrogen passivation of carbon Pb like centers at the 3C- and 4H-SiC/SiO2 interfaces in oxidized porous SiC”, J. L. Cantin, H. J. von Bardeleben, Yue Ke, R. P. Devaty, W. J. ChoykeThe effect of forming gas and vacuum annealing on the concentration of carbon dangling bond (PbC) centers at 3C- and 4H-SiC/SiO2 interfaces has been studied by electron paramagnetic resonance (EPR) spectroscopy. Our results show efficient passivation at 400 °C and... (Read more)
- 30. J. Appl. Phys. 100, 094108 (2006) , “The effect of interfacial layer properties on the performance of Hf-based gate stack devices”, G. Bersuker, C. S. Park, J. Barnett, P. S. Lysaght, P. D. Kirsch, C. D. Young, R. Choi, B. H. Lee, B. Foran, K. van Benthem, S. J. Pennycook, P. M. Lenahan, and J. T. RyanThe influence of Hf-based dielectrics on the underlying SiO2 interfacial layer (IL) in high-k gate stacks is investigated. An increase in the IL dielectric constant, which correlates to an increase of the positive fixed charge density in the IL, is found to depend on the starting,... (Read more)
- 31. J. Appl. Phys. 100, 043706 (2006) , “Electrical properties of unintentionally doped semi-insulating and conducting 6H-SiC”, W. C. Mitchel, W. D. Mitchell, Z. Q. Fang, D. C. Look, S. R. Smith, H. E. Smith, Igor Khlebnikov, Y. I. Khlebnikov, C. Basceri, and C. BalkasTemperature dependent Hall effect (TDH), low temperature photoluminescence (LTPL), secondary ion mass spectrometry (SIMS), optical admittance spectroscopy (OAS), and thermally stimulated current (TSC) measurements have been made on 6H-SiC grown by the physical vapor transport technique... (Read more)
- 32. J. Appl. Phys. 100, 043703 (2006) , “Combined optical and electrical studies of the effects of annealing on the intrinsic states and deep levels in a self-assembled InAs quantum-dot structure”, S. W. Lin, A. M. Song, N. Rigopolis, B. Hamilton, A. R. Peaker, and M. MissousThe effects of postgrowth rapid thermal annealing on the electronic states in a relatively long wavelength (~1.3 µm), self-assembled InAs/GaAs quantum-dot structure are investigated. We combine optical and electrical experiments, i.e., photoluminescence (PL) and deep-level transient... (Read more)
- 33. J. Appl. Phys. 100, 034911 (2006) , “Thermal evolution of hydrogen related defects in hydrogen implanted Czochralski silicon investigated by Raman spectroscopy and atomic force microscopy”, W. Düngen, R. Job, Y. Ma, Y. L. Huang, T. Mueller, W. R. Fahrner, L. O. Keller, J. T. Horstmann, and H. FiedlerMicro-Raman spectroscopy and atomic force microscopy investigations have been applied on hydrogen implanted p-type Czochralski silicon samples to investigate the hydrogen related defects and their evolution after subsequent annealing. The thermal evolution of interstitial-hydrogen and... (Read more)
- 34. J. Appl. Phys. 100, 023531 (2006) , “Lattice site location and annealing behavior of implanted Ca and Sr in GaN”, B. De Vries, A. Vantomme, U. Wahl, J. G. Correia, J. P. Araújo, W. Lojkowski, and D. KolesnikovWe report on the lattice location of ion-implanted Ca and Sr in thin films of single-crystalline wurtzite GaN. Using the emission channeling technique the angular distributions of particles emitted by the radioactive isotopes 45Ca (t1/2=163.8 d) and... (Read more)
- 35. J. Appl. Phys. 100, 023525 (2006) , “Evolution of erbium lattice locations in silicon: Effects of thermal annealing and codoped impurities (carbon, nitrogen, oxygen, and fluorine)”, X. T. Ren and M. B. HuangThe effects of thermal annealing and codoped impurities including carbon, nitrogen, oxygen, and fluorine, on the occupation of erbium lattice locations in Si, have been investigated in detail. Ion channeling measurements indicate that ion-implanted Er can mainly occupy two distinct lattice locations... (Read more)
- 36. J. Appl. Phys. 99, 123514 (2006) , “Study of the annealing kinetic effect and implantation energy on phosphorus-implanted silicon wafers using spectroscopic ellipsometry”, Emmanouil Lioudakis, Constantinos Christofides, and Andreas OthonosIn this work, we have studied the changes in the optical properties on crystalline silicon implanted wafers (1×10131×1016 P+/cm2) using an extensive ellipsometric analysis. The effects of implantation energy (20180 KeV) and... (Read more)
- 37. J. Appl. Phys. 99, 123501 (2006) , “Thermal annealing study of swift heavy-ion irradiated zirconia”, Jean-Marc Costantini, Andrée Kahn-Harari, François Beuneu, and François CouvreurSintered samples of monoclinic zirconia (-ZrO2) have been irradiated at room temperature with 6.0 GeV Pb ions in the electronic slowing down regime. X-ray diffraction (XRD) and micro-Raman spectroscopy measurements showed unambiguously that a transition to the "metastable"... (Read more)
- 38. J. Appl. Phys. 99, 113520 (2006) , “Effects of hydrogen bond redistribution on photoluminescence of a-SiC:H films under thermal treatment”, A. V. Vasin, S. P. Kolesnik, A. A. Konchits, V. I. Kushnirenko, V. S. Lysenko, A. N. Nazarov, A. V. Rusavsky, and S. AshokHydrogenated amorphous silicon carbide (a-SiC:H) films have been deposited using magnetron sputtering technique. An integrated investigation of the effect of vacuum annealing temperature on photoluminescence properties and paramagnetic defects and its correlation with structural... (Read more)
- 39. J. Appl. Phys. 99, 093706 (2006) , “Thermal donors formation via isothermal annealing in magnetic Czochralski high resistivity silicon”, Mara Bruzzi, David Menichelli, Monica Scaringella, Jaakko Härkönen, Esa Tuovinen, and Zheng LiA quantitative study about the thermal activation of oxygen related thermal donors in high resistivity p-type magnetic Czochralski silicon has been carried out. Thermal donor formation has been performed through isothermal annealing at 430 °C up to a total time of 120 min. Space charge... (Read more)
- 40. J. Appl. Phys. 99, 093507 (2006) , “Annealing process of ion-implantation-induced defects in ZnO: Chemical effect of the ion species”, Z. Q. Chen, M. Maekawa, A. Kawasuso, S. Sakai, and H. NaramotoZnO single crystals implanted with O+ and B+ ions were studied by positron annihilation and Raman scattering measurements. Positron annihilation results show that vacancy clusters are generated by implantation. For the B+-implanted sample, the vacancy clusters have a... (Read more)
- 41. J. Appl. Phys. 99, 073511 (2006) , “Effects of temperature and flux on oxygen bubble formation in Li borosilicate glass under electron beam irradiation”, Nadège Ollier, Giancarlo Rizza, Bruno Boizot, and Guillaume PetiteOxygen bubble formation and evolution under a 300 keV electron beam are analyzed in a Li borosilicate glass under different irradiation conditions: temperature, flux, and dose. Oxygen bubbles are observed to form in a delimited flux and temperature region with a threshold requirement. This region... (Read more)
- 42. J. Appl. Phys. 99, 013515 (2006) , “Defects and electrical behavior in 1 MeV Si+-ion-irradiated 4H–SiC Schottky diodes”, F. Roccaforte, S. Libertino, V. Raineri, A. Ruggiero, V. Massimino, and L. CalcagnoIn this paper, the formation and evolution of defects induced by ion irradiation with 1 MeV Si+ ions in Ni2Si/4HSiC Schottky diodes were studied and correlated with the electrical properties of the contacts. The current-voltage characteristics of the contacts... (Read more)
- 43. Microelectron. Reliability 46, 1 (2006) , “NBTI degradation: From physical mechanisms to modelling”,An overview of the evolution of transistor parameters under negative bias temperature instability stress conditions commonly observed in p-MOSFETs in recent technologies is presented. The physical mechanisms of the degradation as well as the different defects involved have been discussed according to a systematic set of experiments with different stress conditions. According to our findings, a physical model is proposed which could be used to more accurately predict the transistor degradation. Finally, based on our new present understanding, a new characterization methodology is proposed, which would open the way to a more accurate determination of parameter shifts and thus allowing implementing the degradation into design rules. (Read more)
- 44. Phys. Rev. B 74, 245219 (2006) , “Dynamics of positively charged muonium centers in indium nitride”, Y. G. Celebi, R. L. Lichti, B. E. Coss, and S. F. J. CoxMuon spin depolarization measurements performed on powdered InN with zero applied magnetic field reveal several positively charged diamagnetic muonium centers. At low temperatures, the Mu+ ground state is weakly relaxing with the characteristics of local tunneling motion, which changes to... (Read more)
- 45. Phys. Rev. B 74, 245205 (2006) , “Mn incorporation in as-grown and annealed (Ga,Mn)As layers studied by x-ray diffraction and standing-wave fluorescence”, V. Holý, Z. Matj, O. Pacherová, V. Novák, M. Cukr, K. Olejník, and T. JungwirthA combination of high-resolution x-ray diffraction and a technique of x-ray standing-wave fluorescence at grazing incidence is employed to study the structure of a (Ga,Mn)As-diluted magnetic semiconductor and its changes during post-growth annealing steps. We find that the film is formed by a... (Read more)
- 46. Phys. Rev. B 74, 245201 (2006) , “Electrical resistivity and metal-nonmetal transition in n-type doped 4H-SiC”, Antonio Ferreira da Silva, Julien Pernot, Sylvie Contreras, Bo E. Sernelius, Clas Persson, and Jean CamasselThe electrical resistivity of 4H-SiC doped with nitrogen is analyzed in the temperature range 10–700 K for nitrogen concentrations between 3.5×1015 and 5×1019 cm−3. For the highest doped samples, a good agreement is found between the... (Read more)
- 47. Phys. Rev. B 74, 235317 (2006) , “Impurity conduction in phosphorus-doped buried-channel silicon-on-insulator field-effect transistors at temperatures between 10 and 295 K”, Yukinori Ono, Jean-Francois Morizur, Katsuhiko Nishiguchi, Kei Takashina, Hiroshi Yamaguchi, Kazuma Hiratsuka, Seiji Horiguchi, Hiroshi Inokawa, and Yasuo TakahashiWe investigate transport in phosphorus-doped buried-channel metal-oxide-semiconductor field-effect transistors at temperatures between 10 and 295 K. We focus on transistors with phosphorus donor concentrations higher than those previously studied, where we expect conduction to rely on donor... (Read more)
- 48. Phys. Rev. B 74, 205202 (2006) , “Structural model of amorphous silicon annealed with tight binding”, N. Bernstein, J. L. Feldman,, and M. FornariWe present a model of amorphous silicon generated by extensive annealing of a continuous random network structure using a molecular dynamics simulation with forces computed by a tight-binding total energy method. We also produce a refined model by relaxing the annealed model using density functional... (Read more)
- 49. Phys. Rev. B 74, 184108 (2006) , “Interpreting Mössbauer spectra reflecting an infinite number of sites: An application to Fe1−xSi synthesized by pulsed laser annealing”, A. Falepin, S. Cottenier, C. M. Comrie, and A. VantommeWe present a study on the interpretation of conversion electron Mössbauer spectra reflecting an infinite number of sites, in casu Mössbauer spectroscopy on Fe1−xSi layers on Si, synthesized by pulsed laser annealing. These spectra display a broad... (Read more)
- 50. Phys. Rev. B 74, 174122 (2006) , “Lithium colloids and color center creation in electron-irradiated Li2NH observed by electron-spin resonance”, F. Beuneu, P. Vajda, Y. Nakamori, and S. OrimoWe have irradiated Li2NH powder with MeV electrons at room temperature and investigated the introduced defects with electron spin resonance. Conduction electron spin resonance indicates the presence of nanosize metallic Li colloids seen as a Lorentzian line with a g=2.0023 and a... (Read more)
- 51. Phys. Rev. B 74, 174120 (2006) , “Single-crystal silicon coimplanted by helium and hydrogen: Evolution of decorated vacancylike defects with thermal treatments”, C. Macchi, S. Mariazzi, G. P. Karwasz, R. S. Brusa, P. Folegati, S. Frabboni, and G. OttavianiSi p-type (100) samples were coimplanted at room temperature with He+ ions at 30 keV with a dose of 1×1016 ions/cm2 and successively with H+ ions at 24 keV with a dose of 1×1016 ions/cm2. A series of samples was... (Read more)
- 52. Phys. Rev. B 74, 161202 (2006) , “Deactivation of Li by vacancy clusters in ion-implanted and flash-annealed ZnO”, T. Moe Børseth, F. Tuomisto, J. S. Christensen, W. Skorupa, E. V. Monakhov, B. G. Svensson, and A. Yu. KuznetsovLi is present in hydrothermally grown ZnO at high concentrations and is known to compensate both n- and p-type doping due to its amphoteric nature. However, Li can be manipulated by annealing and ion implantation in ZnO. Fast, 20 ms flash anneals in the 9001400 °C range... (Read more)
- 53. Phys. Rev. B 74, 140502(R) (2006) , “Lattice parameters and thermal expansion of superconducting boron-doped diamonds”, V. V. Brazhkin, E. A. Ekimov, A. G. Lyapin, S. V. Popova, A. V. Rakhmanina, S. M. Stishov, V. M. Lebedev, Y. Katayama, and K. KatoUsing two different high-pressure techniques, we have prepared boron-doped diamonds with atomic concentration of the dopant ranging from 0.04% to 4% (from 7×1019 to 7×1021 atom/cm3) and studied the lattice constants and thermal expansion of the diamonds... (Read more)
- 54. Phys. Rev. B 73, 115203 (2006) , “Thermal stability of gamma-irradiation-induced oxygen-deficient centers in silica”, S. Agnello and L. NuccioThe effects of isochronal thermal treatments on three -irradiation-induced point defects, named the E, ODC(II), and H(I) centers, are investigated in various types of commercial silica (a-SiO2). ODC(II) is investigated by means of photoluminescence spectroscopy,... (Read more)
- 55. Phys. Rev. Lett. 97, 016102 (2006) , “Scaling and Universality of Roughening in Thermal Oxidation of Si(001)”, Hiroo Omi, Hiroyuki Kageshima, and Masashi UematsuBy analyzing atomic force microscopy images, we derive a continuum equation that quantitatively explains the roughening at the Si(001)-SiO2 interface during thermal oxidation at the temperature at 1200 °C in an Ar atmosphere containing a small fraction of O2. We also show... (Read more)
- 56. Phys. Rev. Lett. 96, 55501 (2006) , “Divacancy in 4H-SiC”, N. T. Son, P. Carlsson, J. ul Hassan, E. Janz?n, T. Umeda, J. Isoya, A. Gali, M. Bockstedte, N. Morishita, T. Ohshima, H. ItohElectron paramagnetic resonance and ab initio supercell calculations suggest that the P6/P7 centers, which were previously assigned to the photoexcited triplet states of the carbon vacancy-antisite pairs in the double positive charge state, are related to the triplet ground... (Read more)
- 57. Phys. Rev. Lett. 96, 145501 (2006) , “Identification of the Carbon Antisite-Vacancy Pair in 4H-SiC”, T. Umeda, N. T. Son, J. Isoya, E. Janzn, T. Ohshima, N. Morishita, H. Itoh, A. Gali, M. BockstedteThe metastability of vacancies was theoretically predicted for several compound semiconductors alongside their transformation into the antisite-vacancy pair counterpart; however, no experiment to date has unambiguously confirmed the existence of antisite-vacancy pairs. Using electron paramagnetic resonance and first principles calculations we identify the SI5 center as the carbon antisite-vacancy pair in the negative charge state (CSiVC-) in 4H-SiC. We suggest that this defect is a strong carrier-compensating center in n-type or high-purity semi-insulating SiC. (Read more)SiC| ENDOR EPR Theory electron-irradiation optical-spectroscopy thermal-meas./anneal-exp.| -1 -2 1.0eV~ 13C 29Si C1h C3v Carbon Csi EI5/6 HEI1 HEI5/6 Nitrogen P6/7 SI5 Silicon Vc antisite bistable/metastable dangling-bond n-type pair(=2) semi-insulating vacancy .inp files: SiC/SI5_C1h SiC/SI5_80K SiC/SI5_100K | last update: Takashi Fukushima
- 58. Appl. Phys. Lett. 87, 204106 (2005) , “Direct observation of the structure of defect centers involved in the negative bias temperature instability”, J. P. Campbell and P. M. LenahanWe utilize a very sensitive electron paramagnetic resonance technique called spin-dependent recombination to observe and identify defect centers generated by modest negative bias and moderately elevated temperatures in fully processed p-channel metal-oxide-silicon field-effect transistors.... (Read more)
- 59. Appl. Phys. Lett. 87, 022903 (2005) , “Electron spin resonance investigation of oxygen-vacancy-related defects in BaTiO3 thin films”, V. V. Laguta, A. M. Slipenyuk, I. P. Bykov, M. D. Glinchuk, M. Maglione, D. Michau, J. Rosa, L. JastrabikThe Ti3+ center, based on a regular Ti site perturbed by an oxygen vacancy (VO), is identified by electron spin resonance (ESR) in textured BaTiO3 films. The center shows tetragonal symmetry along cubic 100 axes with g-factors: g=1.997,... (Read more)
- 60. J. Appl. Phys. 98, 053707 (2005) , “An asymmetry of conduction mechanisms and charge trapping in thin high-k HfxTiySizO films”, A. Paskaleva, A. J. Bauer, M. LembergerThe electrical behavior of high-permittivity (high-k) hafnium titanium silicate (HfxTiySizO) layers with different Hf:Ti ratios in the films is investigated. The films were deposited by metal-organic chemical-vapor deposition using a... (Read more)
- 61. Microelectron. Reliability 45, 71 (2005) , “A comprehensive model of PMOS NBTI degradation ”,Negative bias temperature instability has become an important reliability concern for ultra-scaled Silicon IC technology with significant implications for both analog and digital circuit design. In this paper, we construct a comprehensive model for NBTI phenomena within the framework of the standard reaction–diffusion model. We demonstrate how to solve the reaction–diffusion equations in a way that emphasizes the physical aspects of the degradation process and allows easy generalization of the existing work. We also augment this basic reaction–diffusion model by including the temperature and field-dependence of the NBTI phenomena so that reliability projections can be made under arbitrary circuit operating conditions. (Read more)
- 62. Microelectron. Reliability 45, 57 (2005) , “Characterization of interface defects related to negative-bias temperature instability SiON/Si<100> systems ”,Interface defects related to negative-bias temperature instability (NBTI) in an ultrathin plasma-nitrided SiON/ Si<100> system were characterized by using conductance–frequency measurements, electron-spin resonance measure- ments, and synchrotron radiation X-ray photoelectron spectroscopy. It was confirmed that NBTI is reduced by using D2-annealing instead of the usual H2-annealing. Interfacial Si dangling bonds (Pb1 and Pb0 centers) were detected in a sample subjected to negative-bias temperature stress (NBTS). Although we suggest that NBTS also generates non-Pb defects, it does not seem to generate nitrogen dangling bonds. These results show that NBTI of the plasma-nitrided SiON/Si system is predominantly due to Pb depassivation. Plasma nitridation was also found to increase the Pb1/Pb0 density ratio, modify the Pb1 defect structure, and increase the latent interface trap density by generating Si suboxides at the interface. These changes are likely to be the causes of NBTI in ultrathin plasma-nitrided SiON/Si systems. (Read more)
- 63. Phys. Rev. B 72, 045219 (2005) , “Fluorine in Si: Native-defect complexes and the supression of impurity diffusion”, Giorgia M. Lopez, Vincenzo Fiorentini, Giuliana Impellizzeri, Salvatore Mirabella, Enrico NapolitaniThe transient enhanced diffusion of acceptor impurities severely affects the realization of ultrahigh doping regions in miniaturized Si-based devices. Fluorine codoping has been found to suppress this transient diffusion, but the mechanism underlying this effect is not understood. It has been proposed that fluorine-impurity or fluorine–native-defect interactions may be responsible. Here we clarify this mechanism combining first-principles theoretical studies of fluorine in Si and purposely designed experiments on Si structures containing boron and fluorine. The central interaction mechanism is the preferential binding of fluorine to Si-vacancy dangling bonds and the consequent formation of vacancy-fluorine complexes. The latter effectively act as traps for the excess self-interstitials that would normally cause boron transient enhanced diffusion. Instead, fluorine-boron interactions are marginal and do not play any significant role. Our results are also consistent with other observations such as native-defect trapping and bubble formation. (Read more)
- 64. Appl. Phys. Lett. 85, 1538 (2004) , “Observation of fluorine-vacancy complexes in silicon”, P. J. Simpson, Z. Jenei, P. Asoka-Kumar, R. R. Robison, M. E. LawWe show direct evidence, obtained by positron annihilation spectroscopy, for the complexing of fluorine with vacancies in silicon. Both float zone and Czochralski silicon wafers were implanted with 30 keV fluorine ions to a fluence of 2×1014 ions/cm2, and studied in the... (Read more)
- 65. IEEE Electron Device Lett. 25, 153 (2004) , “Evaluation of NBTI in HfO2 Gate-Dielectric Stacks With Tungsten Gates”,
- 66. J. Appl. Phys. 96, 2406-2408 (2004) , “Annealing behavior of the carbon vacancy in electron-irradiated 4H-SiC”, Z. Zolnai, N. T. Son, C. Hallin, and E. JanzénElectron paramagnetic resonance (EPR) was used to study the annealing behavior of the positively charged carbon vacancy (EI5 center) in electron-irradiated 4H-SiC. At ~1000 °C the EPR signal of the defect starts decreasing gradually. Clear ligand hyperfine structure is still observed after... (Read more)
- 67. J. Appl. Phys. 95, 4096 (2004) , “Nitridation effects on Pb center structures at SiO2/Si(100) interfaces ”,Interfacial defect structures of NO-nitride oxide on Si(100) were characterized by electron spin resonance spectroscopy. We confirmed that the effective g values of the Pb1 center are affected by interfacial nitridation even at a small nitrogen concentration of 5 at. %, while those of the Pb0 center proved to be unchanged. We observed that the shifted Pb1 line appeared gradually with interfacial nitrogen concentration, which suggests that the nitrogen-induced modified structure substitutes for the original Pb1 structure. Angular variations of the shifted Pb1 lines were also significantly different from those of pure oxide. Based on our analysis, we attributed the g value shift of the Pb1 center to dangling bond tilting, caused by the displacement of nearest-neighbor Si atoms. (Read more)
- 68. Appl. Phys. Lett. 83, 1647 (2003) , “Dynamic recovery of negative bias temperature instability in p-type metal–oxide–semiconductor field-effect transistors”,An unexpected physical phenomenondynamic recovery of negative bias temperature instability (NBTI)is reported. NBTI degradation in p-type metaloxidesemiconductor field-effect transistors is significantly (by ~40%) reduced after stress interruption. NBTI recovery... (Read more)
- 69. Appl. Phys. Lett. 82, 3677-3679 (2003) , “Interface defects responsible for negative-bias temperature instability in plasma-nitrided SiON/Si(100) systems”, Shinji Fujieda, Yoshinao Miura, and Motofumi SaitohInterface defects generated by negative-bias temperature stress (NBTS) in an ultrathin plasma- nitrided SiON/Si(100) system were characterized by using D2 annealing, conductance-frequency measurements, and electron-spin resonance measurements. D2 annealing was shown to lower... (Read more)
- 70. Appl. Phys. Lett. 82, 269 (2003) , “Relationship between interfacial nitrogen concentration and activation energies of fixed-charge trapping and interface state generation under bias-temperature stress condition”,The influence of nitrogen concentration at a nitrided oxide/silicon interface on the activation energies of both near-interface fixed-charge trapping and interface state generation caused by negative bias temperature instability stress has been studied quantitatively. It is observed that the charge... (Read more)
- 71. J. Appl. Phys. 94, 1 (2003) , “Negative bias temperature instability: Road to cross in deep submicron silicon semiconductor manufacturing”,We present an overview of negative bias temperature instability (NBTI) commonly observed in p-channel metaloxidesemiconductor field-effect transistors when stressed with negative gate voltages at elevated temperatures. We discuss the results of such stress on device and circuit... (Read more)
- 72. Phys. Rev. B 67, 195338 (2003) , “Layer-resolved kinetics of Si oxidation investigated using the reflectance difference oscillation method”, T. Yasuda, N. Kumagai, M. Nishizawa, S. Yamasaki, H. Oheda, and K. YamabeDry oxidation kinetics of the Si(001) surface has been investigated using reflectance difference oscillation to resolve atomic-scale phenomena. The activation energy for oxidation has been found to increase as the oxide-Si interface moves in the depth direction, reaching the value for bulk... (Read more)
- 73. Phys. Rev. Lett. 90, 155901 (2003) , “Fluorine in Silicon: Diffusion, Trapping, and Precipitation”, X. D. Pi, C. P. Burrows, P. G. ColemanThe effect of vacancies on the behavior of F in crystalline Si has been elucidated experimentally for the first time. With positron annihilation spectroscopy and secondary ion mass spectroscopy, we find that F retards recombination between vacancies (V) and interstitials (I) because V and I trap F to form complexes. F diffuses in the V-rich region via a vacancy mechanism with an activation energy of 2.12±0.08 eV. After a long annealing time at 700ºC, F precipitates have been observed by cross-section transmission electron microscopy which are developed from the V-type defects around the implantation range and the I-type defects at the end of range. (Read more)
- 74. Appl. Phys. Lett. 81, 2397-2399 (2002) , “Hydrogen redistribution induced by negative-bias-temperature stress in metal–oxide–silicon diodes”, Ziyuan LiuPoly-Si/SiO2/Si diodes in which oxides were grown thermally under wet oxidation conditions and subsequently treated by a post-oxidation anneal (POA) have been characterized electrically and chemically before and after applying negative-bias-temperature stress (NBTS). It was confirmed that... (Read more)
- 75. Appl. Phys. Lett. 80, 4753-4755 (2002) , “Characterization of S centers generated by thermal degradation in SiO2 on (100)Si”, A. Stesmans, B. Nouwen, D. Pierreux, and V. V. Afanas'evThe structural degradation of thermal SiO2 on (100)Si under isochronal vacuum annealing in the range Tan = 950 °C1250 °C was monitored by electron spin resonance (ESR) in terms of point defect creation, including... (Read more)
- 76. Appl. Phys. Lett. 80, 1945-1947 (2002) , “Density of states of Pb1 Si/SiO2 interface trap centers”, J. P. Campbell and P. M. LenahanThe electronic properties of the (100) Si/SiO2 interfacial defect called Pb1 are quite controversial. We present electron spin resonance measurements that demonstrate: (1) that the Pb1 defects have levels in the silicon band gap, (2) that... (Read more)
- 77. Appl. Phys. Lett. 80, 1261-1263 (2002) , “Hole trapping in ultrathin Al2O3 and ZrO2 insulators on silicon”, V. V. Afanas'ev and A. StesmansOptical injection of electron-hole pairs in 35 nm thick layers of SiO2, Al2O3, ZrO2 and their stacks on (100)Si is found to result in positive oxide charging, suggesting trapping of holes. In thin layers of the high-permittivity metal oxides... (Read more)
- 78. Phys. Rev. Lett. 89, 135507 (2002) , “Diffusion and Reactions of Hydrogen in F2-Laser-Irradiated SiO2 Glass”, Koichi Kajihara, Linards Skuja, Masahiro Hirano, and Hideo HosonoThe diffusion and reactions of hydrogenous species generated by single-pulsed F2 laser photolysis of SiO-H bond in SiO2 glass were studied in situ between 10 and 330 K. Experimental evidence indicates that atomic hydrogen (H0) becomes mobile even at temperatures as... (Read more)
- 79. Jpn. J. Appl. Phys. 40, 2840 (2001) , “Spin-Dependent Trap-Assisted Tunneling Current in Ultra-Thin Gate Dielectrics”,We have characterized the leakage current paths of ultra-thin gate dielectrics using spin-dependent tunneling (SDT) spectroscopy. A spin-dependent current was detected in metal-oxide-semiconductor diodes with chemical-vapor-deposition SiN gate films with thickness less than 3 nm. We examined the nature of the trap sites in terms of g-value, bias-dependent signal intensity, and magnetic-field orientation dependence. The main feature of the observed spectrum is attributed to a paramagnetic Si site in the SiN films. By using a quantitative model of electron spin-polarization, we were able to estimate the ratio of trap-assisted current to the total leakage current. (Read more)
- 80. Mater. Sci. Eng. R 33, 135-207 (2001) , “Comprehensive characterization of hydride VPE grown GaN layers and templates”, H. MorkoçGaN community has recently recognized that it is imperative that the extended, and point defects in GaN and related materials, and the mechanisms for their formation are understood. This is a first and an important step, which must be followed by defect reduction before full implementation of this... (Read more)
- 81. Appl. Phys. Lett. 76, 3771-3773 (2000) , “Do Pb1 centers have levels in the Si band gap? Spin-dependent recombination study of the Pb1 "hyperfine spectrum"”, Tetsuya D. Mishima and Patrick M. LenahanThe electronic properties of the (001) Si/SiO2 Pb1 defect are the subject of considerable controversy. We present spin-dependent recombination results which indicate most strongly that the Pb1 centers have levels in the Si band gap. Our... (Read more)
- 82. Phys. Rev. Lett. 85, 2324-2327 (2000) , “Fast Diffusion of H and Creation of Dangling Bonds in Hydrogenated Amorphous Silicon Studied by in situ ESR”, U. K. Das, T. Yasuda, and S. YamasakiThe interaction of atomic hydrogen with a-Si:H films was studied by means of in situ ESR during H plasma treatment. H diffuses into the a-Si:H film and creates additional Si dangling bonds (∼1013 cm -2). We observed a high diffusion coefficient (>10-10 cm... (Read more)
- 83. Mater. Sci. Eng. B 58, 171-178 (1999) , “Self-Interstitial Related Reactions in Silicon Irradiated by Light Ions”, B. N. Mukashev, Kh. A. Abdullin, Yu. V. Gorelkinskii and S. Zh. TokmoldinRecent deep level transient spectroscopy (DLTS), electron paramagnetic resonance (EPR) and infrared (IR) spectroscopy data on interactions of self-interstitial with carbon, aluminium, oxygen and hydrogen in silicon irradiated by light ions are reviewed. Self-interstitial behaviour in silicon was... (Read more)
- 84. Phys. Rev. B 58, 3842 (1998) , “Electron Paramagnetic Resonance Study of Hydrogen-Vacancy Defects in Crystalline Silicon”, P. Stallinga, P. Johannesen, S. Herstm, K. Bonde Nielsen, B. Bech Nielsen, J. R. Byberg.Electron paramagnetic resonance measurements on float-zone silicon implanted with protons at ?50 K followed by heating to room temperature have revealed two signals S1a and S1b belonging to the S1 group of signals. S1a and S1b both originate from defects... (Read more)
- 85. phys. stat. sol. (a) 168, 73 (1998) , “Self-Interstitials in Silicon Irradiated with Light Ions”, B. N. Mukashev, Kh. A. Abdullin, Yu. V. Gorelkinskii.The behavior of self-interstitials in silicon which was irradiated with light ions (protons and -particles) and electrons was explored by monitoring known impurity interstitial centers (Ci, Ali, (Si-O)i) with deep level transient spectroscopy (DLTS) and electron... (Read more)
- 86. Phys. Rev. Lett. 79, 1507 (1997) , “Identification of the Silicon Vacancy Containing a Single Hydrogen Atom by EPR”, B. Bech Nielsen, P. Johannesen, P. Stallinga, K. Bonde Nielsen
- 87. Mater. Sci. Eng. B 36, 77 (1996) , “New Oxygen-Related EPR Spectra in Proton-Irradiated Silicon”, Kh. A. Abdullin, B. N. Mukashev, A. M. Makhov and Yu. V. GorelkinskiiAn electron-paramagnetic resonance (EPR) study of proton-irradiated silicon has revealed two new EPR spectra labeled Si-AA13 and Si-AA14. Spectrum AA13 has C3v symmetry (g = 1.9985 and g = 2.0024 ± 0.0002), AA14 C1 symmetry. These spectra correspond to positive (B+) and negative (B−)... (Read more)
- 88. Semicond. Sci. Technol. 11, 1696-1703 (1996) , “Metastable oxygen - silicon interstitial complex in crystalline silicon”, Kh. A. Abdullin, B. N. Mukashev, Yu. V. Gorelkinskii.A new metastable complex in monocrystalline silicon irradiated at with protons has been studied. Electron paramagnetic resonance (EPR) Si-AA13 ( symmetry) and Si-AA14 ( symmetry) spectra as well as the known Si-A18 spectrum originate from different molecular configurations of the complex. A... (Read more)
- 89. Jpn. J. Appl. Phys. 34, 5483-5488 (1995) , “Effects of Grown-in Hydrogen on Lifetime of Czochralski Silicon Crystals ”, Akito HaraI studied the effects of grown-in hydrogen on the lifetime of Czochralski-grown silicon crystals. It was found that grown-in hydrogen degraded the electrical properties of Czochralski-grown silicon crystals by enhancing the formation of recombination centers, which had a high thermal stability... (Read more)
- 90. Phys. Rev. B 51, 16721 (1995) , “Electronic states associated with dislocations in p-type silicon studied by means of electric-dipole spin resonance and Deep-Level Transient Spectroscopy”, V. Kveder, T. Sekiguchi, K. Sumino.Dislocation loops consisting of long and straight segments of 60? and screw parts were introduced in p-type Si by deformation under a high stress at a relatively low temperature. Electronic states associated with such dislocations were investigated by means of electric-dipole spin resonance, with... (Read more)
- 91. Phys. Rev. Lett. 73, 3419 (1994) , “Non-Arrhenius Reorientation Kinetics for the B-H Complex in Si: Evidence for Thermally Assisted Tunneling”, Y. Michael Cheng and Michael StavolaThe B-H complex in Si can be aligned by stress and reorients with an activation energy of roughly 0.2 eV. We combine new measurements of the reorientation kinetics of the B-H complex made by the stress-induced dichroism technique with previous internal friction results to show that the reorientation... (Read more)
- 92. Phys. Rev. Lett. 72, 2745-2748 (1994) , “Atomic Hydrogen Reactions with Pb Centers at the (100) Si/SiO2 Interface”, J. H. Stathis, E. CartierWe have investigated the reaction of atomic hydrogen with defects at the (100) Si/SiO2 interface. Similar to previous results on the (111) interface, we find that the two paramagnetic defects at the (100) interface, Pb0 and Pb1, are either passivated or produced by... (Read more)
- 93. Proc. symp. on the degradation od electronic devices due to device operation as well as crystalline and process-induced defects 94-1, 221-234 (1994) , ECS (ISBN:1-56677-037-8) , “Spin dependent recombination in Si p-n junctions”, B. K. Meyer , P. Christmann , W. Stadler, H. Overhof, J.-M. Spaeth, S. Greulich-Weber, B. Stich
- 94. Jpn. J. Appl. Phys. 32, L1715 (1993) , “Carbon-Induced Rapid Annihilation of Thermal Double Donors in Czochralski Silicon Studied by Infrared Absorption Spectroscopy ”, Yoichi Kamiura*1, Yutaka Uno*2 and Fumio HashimotoCarbon-rich Czochralski Si shows anomalously rapid annihilation for all the species of thermal double donors at 470°C in two stages, which have good time correlations with the decrease of substitutional carbon density and also with the formation of two kinds of carbon-related new donors which... (Read more)
- 95. Phys. Rev. B 48, 2418-2435 (1993) , “Structural relaxation of Pb defects at the (111)Si/SiO2 interface as a function of oxidation temperature: The Pb-generation-stress relationship”, A. StesmansElectron-spin-resonance (ESR) studies of intrinsic Pb defects at the (111)Si/SiO2 interface have been carried out as a function of oxidation temperature Tox for the range 22<ToxTox and high-Tox... (Read more)
- 96. J. Appl. Phys. 72, 520-524 (1992) , “Deep levels of vanadium and vanadium-hydrogen complex in silicon”, T. Sadoh, H. Nakashima, and T. TsurushimaDeep levels in vanadium-doped n- and p-type silicon have been investigated using deep level transient spectroscopy (DLTS) and concentration profile measurements. The DLTS measurement reveals two electron traps of EC−0.20 eV and... (Read more)
- 97. J. Non-Cryst. Solids 149, 137-160 (1992) , “Electron spin resonance characterization of self-trapped holes in amorphous silicon dioxide”, David L. GriscomThe electron spin resonance spectra of radiation-induced self-trapped holes (STHs) in amorphous silicon dioxide are isolated by isochromal annealing experiments and computer simulation analyses. Two distinct components, denoted STH1 and STH2 (plus a third component intermediate between the two),... (Read more)
- 98. Mater. Sci. Forum 83-87, 1165-1170 (1992) , “Spin dependent recombination at deep centers in Si - electrically detected magnetic resonance”, P. Christmann , M. Bernauer , C. Wetzel , A. Asenov , B. K. Meyer , A. Endros
- 99. Appl. Phys. Lett. 59, 3165 (1991) , “Hydrogen diffusivities below room temperature in silicon evaluated from the photoinduced dissociation of hydrogen–carbon complexes”, Yoichi Kamiura, Minoru Yoneta, and Fumio HashimotoWe have evaluated hydrogen and deuterium diffusivities in silicon below room temperature (220–270 K) by analyzing the kinetics of photoinduced dissociation of a chemical etching introduced hydrogen (deuterium)–carbon complex. Under sufficiently strong illumination, the annihilation rate... (Read more)
- 100. Phys. Rev. B 44, 11486-11489 (1991) , “Reorientation of the B-H complex in silicon by anelastic relaxation experiments”, G. Cannelli, R. Cantelli, M. Capizzi, C. Coluzza, F. Cordero, A. Frova, A. Lo PrestiThe elastic energy loss between 60 and 300 K was measured in SiBxHy at frequencies between 2.4 and 32 kHz. A single-time relaxation process appears in the neighborhood of 130 K, which is due to the stress-induced jumps of H around B, with a relaxation time... (Read more)
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