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- 11. Appl. Phys. Lett. 89, 082510 (2006) , “Observation and manipulation of paramagnetic oxygen vacancies in Co-doped TiO2 nanocrystals”, Dengyu Pan, Guoliang Xu, Liya Lv, Yuan Yong, Xiuwei Wang, Jianguo Wan, Guanghou Wang, and Yunxia SuiElectron paramagnetic resonance measurements were presented to investigate paramagnetic oxygen vacancies (F+ centers) in Co-doped TiO2 nanocrystals. Surface and interior F+ centers were manipulated by washing or/and annealing. Anisotropic surface... (Read more)
- 12. Appl. Phys. Lett. 89, 061103 (2006) , “Field induced photoluminescence quenching and enhancement of CdSe nanocrystals embedded in SiO2”, A. W. Achtstein, H. Karl, and B. StritzkerThe authors describe the operation of an electro-optical photoluminescence quenching device based on CdSe nanoclusters formed using sequential ion implantation of Cd+ and Se+ in thermally grown SiO2 on silicon. A sample geometry consisting of a semitransparent gold... (Read more)
- 13. Appl. Phys. Lett. 89, 042102 (2006) , “Metal precipitation at grain boundaries in silicon: Dependence on grain boundary character and dislocation decoration”, T. Buonassisi, A. A. Istratov, M. D. Pickett, M. A. Marcus, T. F. Ciszek, and E. R. WeberSynchrotron-based analytical microprobe techniques, electron backscatter diffraction, and defect etching are combined to determine the dependence of metal silicide precipitate formation on grain boundary character and microstructure in multicrystalline silicon (mc-Si). Metal silicide precipitate... (Read more)
- 14. Appl. Phys. Lett. 89, 041918 (2006) , “Detection and mobility of hafnium in SiO2”, Dmitri O. Klenov, Thomas E. Mates, and Susanne StemmerHigh-angle annular dark-field imaging in scanning transmission electron microscopy and x-ray photoelectron spectroscopy were used to investigate thermal SiO2 layers doped with Hf by ion implantation. Hf was mobile under the focused electron beam in the as-implanted samples. After... (Read more)
- 15. Appl. Phys. Lett. 89, 031902 (2006) , “Anti-Stokes photoluminescence in ZnO microcrystal”, Weitao Cao, Weimin Du, Fuhai Su, and Guohua LiLow temperature (10 K) strong anti-Stokes photoluminescence (ASPL) of ZnO microcrystal excited by low power cw 532 nm laser is reported here. Energy upconversion of 1.1 eV is obtained in our experiment with no conventional nonlinear effect. Through the study of the normal photoluminescence and... (Read more)
- 16. Appl. Phys. Lett. 89, 013508 (2006) , “Carrier trap passivation in multicrystalline Si solar cells by hydrogen from SiNx:H layers”, H. F. W. Dekkers, L. Carnel, and G. BeaucarneHydrogenation by high temperature rapid annealing of SiNx:H is found to be very effective on the defects responsible for the carrier trapping effect in multicrystalline silicon. The passivation effect is reversible and is annihilated by a long thermal annealing. As for the... (Read more)
- 17. Appl. Phys. Lett. 88, 162107 (2006) , “Physical origin of threshold voltage problems in polycrystalline silicon/HfO2 gate stacks”, Dae Yeon Kim, Joongoo Kang, and K. J. ChangBased on theoretical calculations, we find that at p+ polycrystalline silicon (poly-Si)/HfO2 gates, Si interstitials are easily migrated from the electrode, forming HfSi bonds with a charge transfer to the electrode, and the resulting interface dipole raises the Fermi level... (Read more)
- 18. J. Appl. Phys. 100, 124315 (2006) , “Magnetic resonance study of Ni nanoparticles in single-walled carbon nanotube bundles”, A. A. Konchits, F. V. Motsnyi, Yu. N. Petrov, S. P. Kolesnik, V. S. Yefanov, M. L. Terranova, E. Tamburri, S. Orlanducci, V. Sessa, and M. RossiWe present a detailed study of the electron magnetic resonance (EMR) properties of Ni nanoparticles (NPs) placed in the bundles of single-walled carbon nanotubes produced by arc discharge with Ni catalyst. The behavior of EMR signals has been investigated in the 10–300 K temperature range for... (Read more)
- 19. J. Appl. Phys. 100, 114303 (2006) , “Influence of paramagnetic defects on multicolored luminescence from nanocrystalline silicon”, Keisuke Sato and Kenji HirakuriWe report on the correlation between paramagnetic defects and the luminescent properties of nanocrystalline silicon (nc-Si) using electron spin resonance (ESR) and photoluminescence measurements. Nanocrystalline silicon having particle sizes from 1.9 to 3.0 nm exhibited continuous luminescence... (Read more)
- 20. J. Appl. Phys. 100, 034509 (2006) , “Vacancy-impurity complexes in polycrystalline Si used as gate electrodes of HfSiON-based metal-oxide-semiconductors probed using monoenergetic positron beams”, A. Uedono, K. Ikeuchi, T. Otsuka, K. Yamabe, K. Eguchi, M. Takayanagi, S. Ishibashi, T. Ohdaira, M. Muramatsu, and R. SuzukiVacancy-impurity complexes in polycrystalline Si (poly-Si) used as a gate electrode of the metal-oxide-semiconductor field-effect transistor (MOSFET) were probed using monoenergetic positron beams. Doppler broadening spectra of the annihilation radiation and the positron lifetimes were measured for... (Read more)
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