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- 31. Appl. Phys. Lett. 88, 153507 (2006) , “Influence of trap states on dynamic properties of single grain silicon thin film transistors”, F. Yan, P. Migliorato, R. IshiharaThe transient properties of single grainthin film transistors (SG-TFTs) with high electron mobility have been studied. Overshoot current induced by trap states has been observed in most of the devices. A method of ac measurements has been used to investigate the trap processes. Both transient... (Read more)
- 32. 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)
- 33. Appl. Phys. Lett. 88, 012101 (2006) , “The structure of the SiO2/Si(100) interface from a restraint-free search using computer simulations”, Dominik Fischer, Alessandro Curioni, Salomon Billeter, and Wanda AndreoniThe structure of the interface between SiO2 and Si(100) is investigated using the replica-exchange method driven by classical molecular dynamics simulations based on ab initio-derived interatomic potentials. Abrupt interfaces are shown to be unstable, whereas a substoichiometric... (Read more)
- 34. 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)
- 35. J. Appl. Phys. 100, 064501 (2006) , “Introduction of defects into HfO2 gate dielectrics by metal-gate deposition studied using x-ray photoelectron spectroscopy and positron annihilation”, A. Uedono, T. Naito, T. Otsuka, K. Shiraishi, K. Yamabe, S. Miyazaki, H. Watanabe, N. Umezawa, T. Chikyow, Y. Akasaka, S. Kamiyama, Y. Nara, and K. YamadaThe impact of TiN deposition on thin HfO2 films formed on Si substrates was studied using x-ray photoelectron spectroscopy and a monoenergetic positron beam. For the predeposition sample, the positrons implanted into Si were found to diffuse toward the HfO2/Si interface under... (Read more)
- 36. J. Appl. Phys. 100, 044503 (2006) , “Dislocation dynamics in strain relaxation in GaAsSb/GaAs heteroepitaxy”, B. Pérez Rodríguez and J. Mirecki MillunchickThe real-time stress evolution has been investigated during molecular-beam epitaxial growth of GaAs1xSbx/GaAs metamorphic buffer. These real-time data were obtained using an in situ multibeam optical sensor measurement and has been combined with... (Read more)
- 37. J. Appl. Phys. 100, 033901 (2006) , “Spin-dependent transport in diluted-magnetic-semiconductor/semiconductor quantum wires”, Wen Xu and Yong GuoSpin-polarized transport properties have been investigated in diluted-magnetic-semiconductor/semiconductor quantum wires. We stress the effects introduced by the structural configuration and geometric parameters as well as the external magnetic field. It is found that the symmetric quantum wire... (Read more)
- 38. J. Appl. Phys. 100, 024103 (2006) , “Scanning transmission electron microscopy investigations of interfacial layers in HfO2 gate stacks”, Melody P. Agustin, Gennadi Bersuker, Brendan Foran, Lynn A. Boatner, and Susanne StemmerElectron energy-loss spectroscopy combined with high-angle annular dark-field (HAADF) imaging in scanning transmission electron microscopy was used to investigate the chemistry of interfacial layers in HfO2 gate stacks capped with polycrystalline Si gate electrodes. To interpret the... (Read more)
- 39. J. Appl. Phys. 100, 023711 (2006) , “Charge trapping properties at silicon nitride/silicon oxide interface studied by variable-temperature electrostatic force microscopy”, S.-D. Tzeng and S. GwoCharge trapping properties of electrons and holes in ultrathin nitride-oxide-silicon (NOS) structures were quantitatively determined by variable-temperature electrostatic force microscopy (EFM). From charge retention characteristics obtained at temperatures between 250 and 370 °C and assuming... (Read more)
- 40. J. Appl. Phys. 100, 023512 (2006) , “Stacking faults and twin boundaries in fcc crystals determined by x-ray diffraction profile analysis”, Levente Balogh, Gábor Ribárik, and Tamás UngárA systematic procedure is developed to evaluate the density of planar defects together with dislocations and crystallite or subgrain size by x-ray line profile analysis in fcc crystals. Powder diffraction patterns are numerically calculated by using the DIFFAX software for intrinsic and extrinsic... (Read more)
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