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- 1. Appl. Phys. Express 3, 051002 (2010) , “Nitrogen Related Electron Trap with High Capture Cross Section in n-Type GaAsN Grown by Chemical Beam Epitaxy”, Boussairi Bouzazi, Hidetoshi Suzuki, Nobuaki Kojima, Yoshio Ohshita, and Masafumi YamaguchiA nitrogen-related electron trap, at around 0.3 eV from the conduction band minimum of n-type GaAsN grown by chemical beam epitaxy, is confirmed using deep level transient spectroscopy and nitrogen concentration dependence of its density. It has a high capture cross section and not observed in N... (Read more)
- 2. Appl. Phys. Express 3, 031103 (2010) , “High-Quality p-Type ZnO Films Grown by Co-Doping of N and Te on Zn-Face ZnO Substrates”, Seunghwan Park, Tsutomu Minegishi, Dongcheol Oh, Hyunjae Lee, Toshinori Taishi, Jinsub Park, Mina Jung, Jiho Chang, Inho Im, Junseok Ha, Soonku Hong, Ichiro Yonenaga, Toyohiro Chikyow, and Takafumi YaoThis article will report the epitaxial growth of high-quality p-type ZnO layers on Zn-face ZnO substrates by nitrogen and tellurium (N+Te) co-doping. ZnO:[N+Te] films show p-type conductivity with a hole concentration of 4×1016 cm-3, while ZnO:N shows n-type... (Read more)
- 3. Jpn. J. Appl. Phys. 49, 071302 (2010) , “Deep-Level Transient Spectroscopy and Photoluminescence Studies of Formation and Depth Profiles of Copper Centers in Silicon Crystals Diffused with Dilute Copper”, Minoru Nakamura and Susumu MurakamiWe have observed the formation of the Cu centers in p-type Si crystals diffused with dilute Cu between 400 and 1000 °C by deep-level transient spectroscopy (DLTS) and photoluminescence methods. For the samples diffused below 800 °C, a DLTS Cu center denoted as the CuDLB center was... (Read more)
- 4. Jpn. J. Appl. Phys. 49, 05FE02 (2010) , “Photoinduced Leakage Currents in Silicon Carbon Nitride Dielectrics for Copper Diffusion Barriers”, Kiyoteru Kobayashi and Taketoshi IdeThe current conduction in silicon carbon nitride (SiCN) dielectric films subjected to ultraviolet (UV) illumination at room temperature has been investigated. After exposure of SiCN single-layer and SiCN–SiO2 double-layer films to 4.9-eV UV illumination, leakage currents through... (Read more)
- 5. Jpn. J. Appl. Phys. 49, 051001 (2010) , “Nitrogen-Related Recombination Center in GaAsN Grown by Chemical Beam Epitaxy”, Boussairi Bouzazi, Hidetoshi Suzuki, Nobuaki Kojima, Yoshio Ohshita, and Masafumi YamaguchiA nitrogen-related deep electron trap, at approximately 0.33 eV below the conduction band minimum of GaAsN grown by chemical beam epitaxy, is confirmed to act as a recombination center. The level is found to be responsible for the reverse bias current in the depletion region of n-type GaAsN schottky... (Read more)
- 6. Appl. Phys. Express 2, 091101 (2009) , “Elimination of the Major Deep Levels in n- and p-Type 4H-SiC by Two-Step Thermal Treatment”, Toru Hiyoshi and Tsunenobu KimotoBy thermal oxidation of 4H-SiC at 1150–1300 °C, the Z1/2 and EH6/7 concentrations can be reduced to below 1×1011 cm-3. By the oxidation, however, a high concentration of HK0 center (EV + 0.78 eV) is generated.... (Read more)
- 7. Appl. Phys. Express 2, 041101 (2009) , “Reduction of Deep Levels and Improvement of Carrier Lifetime in n-Type 4H-SiC by Thermal Oxidation”, Toru Hiyoshi and Tsunenobu KimotoSignificant reduction of major deep levels in n-type 4H-SiC(0001) epilayers by means of thermal oxidation is demonstrated. By thermal oxidation of epilayers at 1150–1300 °C, the concentration of the Z1/2 and EH6/7 centers has been reduced from... (Read more)
- 8. Appl. Phys. Lett. 94, 092105 (2009) , “Interaction of oxygen with thermally induced vacancies in Czochralski silicon”, V. Akhmetov, G. Kissinger, and W. von AmmonComplexes consisting of a vacancy and four oxygen atoms, VO4, were found in oxygen-rich Czochralski silicon wafers subjected to rapid thermal annealing (RTA) at 1250 °C for 30 s in Ar/O2 atmosphere by means of Fourier transform infrared spectroscopy with enhanced... (Read more)
- 9. Appl. Phys. Lett. 94, 091903 (2009) , “Photoluminescence studies of impurity transitions in Mg-doped AlGaN alloys”, M. L. Nakarmi, N. Nepal, J. Y. Lin, and H. X. JiangDeep ultraviolet photoluminescence spectroscopy was employed to study the impurity transitions in Mg-doped AlGaN alloys. A group of deep level impurity transitions was observed in Mg-doped AlxGa1−xN alloys, which was identified to have the same origin as the... (Read more)
- 10. Appl. Phys. Lett. 94, 061910 (2009) , “Defect formation and annealing behaviors of fluorine-implanted GaN layers revealed by positron annihilation spectroscopy”, M. J. Wang, L. Yuan, C. C. Cheng, C. D. Beling, and K. J. ChenDefect formation and annealing behaviors of fluorine-implanted, unintentionally doped GaN layers were studied by positron annihilation spectroscopy (PAS). Single Ga vacancies (VGa) were identified as the main vacancy-type defects detected by PAS after fluorine implantation at 180... (Read more)
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