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- 31. Appl. Phys. Lett. 92, 132102 (2008) , “On the identity of a crucial defect contributing to leakage current in silicon particle detectors”, J. H. Bleka, L. Murin, E. V. Monakhov, B. S. Avset, and B. G. SvenssonThe annealing kinetics of the so-called E4/E5 center or E4a/E4b center in electron-irradiated Si particle detectors has been studied at four different temperatures from 23 to 65 °C using deep-level transient spectroscopy (DLTS). The center gives rise to two energy levels at 0.37 and 0.45 eV... (Read more)
- 32. J. Appl. Phys. 104, 093711 (2008) , “Electrical properties of high energy ion irradiated 4H-SiC Schottky diodes”, G. Izzo, G. Litrico, L. Calcagno, G. Foti, and F. La ViaThe changes in the electrical properties of 4H-SiC epitaxial layer induced by irradiation with 7.0 MeV C+ ions were investigated by current-voltage measurements and deep level transient spectroscopy (DLTS). Current-voltage characteristics of the diodes fabricated from epilayers... (Read more)
- 33. J. Appl. Phys. 104, 093521 (2008) , “Native defects and oxygen and hydrogen-related defect complexes in CdTe: Density functional calculations”, Mao-Hua Du, Hiroyuki Takenaka, and David J. SinghWe study structural and electronic properties of various intrinsic and extrinsic defects in CdTe based on first-principles calculations. The focus is given to the role of these defects in the carrier compensation in semi-insulating CdTe, which is essential for the CdTe-based radiation detectors. The... (Read more)
- 34. J. Appl. Phys. 104, 083702 (2008) , “A bistable divacancylike defect in silicon damage cascades”, R. M. Fleming, C. H. Seager, D. V. Lang, E. Bielejec, and J. M. CampbellTwo deep level transient spectroscopy (DLTS) electron emission signatures, previously labeled E4 and E5, have been shown to be bistable with respect to minority carrier injection at room temperature. These result from two charge state transitions of the same defect. We have performed DLTS... (Read more)
- 35. J. Appl. Phys. 104, 054110 (2008) , “The effect of implanting boron on the optical absorption and electron paramagnetic resonance spectra of silica”, R. H. Magruder, III, A. Stesmans, R. A. Weeks,, and R. A. WellerSilica samples (type III, Corning 7940) were implanted with B using multiple energies to produce a layer ~600 nm thick in which the concentration of B ranged from 0.034 to 2.04 at. %. Optical absorption spectra were measured from 1.8 to 6.5 eV. Electron paramagnetic resonance (EPR) measurements... (Read more)
- 36. J. Appl. Phys. 104, 043702 (2008) , “Mechanisms of unexpected reduction in hole concentration in Al-doped 4H-SiC by 200 keV electron irradiation”, Hideharu Matsuura, Nobumasa Minohara, and Takeshi OhshimaThe hole concentration in Al-doped p-type 4H-SiC was found to be significantly reduced by electron irradiation when compared to the hole concentration in Al-doped p-type Si; this is an unexpected result. The temperature dependence of the hole concentration p(T) in... (Read more)
- 37. J. Appl. Phys. 104, 023705 (2008) , “Study of metal-related deep-level defects in germanide Schottky barriers on n-type germanium”, E. Simoen, K. Opsomer, C. Claeys, K. Maex, C. Detavernier, R. L. Van Meirhaeghe, and P. ClauwsDeep levels have been studied in n-type germanium subjected to Co, Fe, Cu, Cr, and Pt germanidation in the temperature range between 300 and 700 °C by deep-level transient spectroscopy (DLTS). It is shown that most DLTS peaks can be assigned to acceptor levels of substitutional metal... (Read more)
- 38. J. Appl. Phys. 104, 014106 (2008) , “Analysis of electrically biased paramagnetic defect centers in HfO2 and HfxSi1−xO2 / (100)Si interfaces”, P. T. Chen, B. B. Triplett, J. J. Chambers, L. Colombo, P. C. McIntyre, and Y. NishiThis study reports on the first experimental observations of electrically biased paramagnetic defects at 800 °C N2 annealed HfxSi1−xO2 (x=0.4, and 0.6)/(100)Si and HfO2/(100)Si interfaces in metal oxide silicon... (Read more)
- 39. J. Appl. Phys. 103, 123709 (2008) , “Optical detection of magnetic resonance and electron paramagnetic resonance study of the oxygen vacancy and lead donors in ZnO”, R. Laiho, L. S. Vlasenko, and M. P. VlasenkoOptical detection of magnetic resonance (ODMR) and electron paramagnetic resonance (EPR) spectra are investigated in ZnO single crystals. The strong negative ODMR line with axial symmetry of the g-tensor around the c axis with g=2.0133±0.0001 and... (Read more)
- 40. J. Appl. Phys. 103, 104505 (2008) , “Vacancy-type defects in Er-doped GaN studied by a monoenergetic positron beam”, A. Uedono, C. Shaoqiang, S. Jongwon, K. Ito, H. Nakamori, N. Honda, S. Tomita, K. Akimoto, H. Kudo, and S. IshibashiA relationship between intra-4f transitions of Er and vacancy-type defects in Er-doped GaN was studied by using a monoenergetic positron beam. Doppler broadening spectra of the annihilation radiation were measured for Er-doped GaN grown by molecular beam epitaxy. A clear correlation between... (Read more)
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