T. Kobayashi, K. Tomigahara, M. Nozaki, T. Shimura, and H. Watanabe,
"Separate evaluation of interface and oxide hole traps in SiO2/GaN MOS structures with below- and above-gap light excitation", Applied Physics Express, 17, (1), pp 011003-1~5 (2023).
M. Sometani, Y. Nishiya, R. Kondo, R. Inohana, H. Zeng, H. Hirai, D. Okamoto, Y. Matsushita, and T. Umeda,
"Energy levels of carbon dangling-bond center (PbC center) at 4H-SiC(0001)/SiO2 interface", APL Materials, 11, (11), pp 111119-1~5 (2023).
T. Kil, T. Kobayashi, T. Shimura, H. Watanabe,
"Design of SiO2/4H–SiC MOS interfaces by sputter deposition of SiO2 followed by high-temperature CO2-post deposition annealing", AIP Advances, 13, (11), pp 115304-1~5 (2023).
A. Rack, H. Sekiguchi, K. Uesugi, N. Yasuda, Y. Takano, T. Okinaka, A. Iguchi, L. Milliere, B. Lukić, M.P. Olbinado, T.G. Etoh,
"Recent developments in MHz radioscopy: Towards the ultimate temporal resolution using storage ring-based light sources", Nuclear Inst. and Methods in Physics Research, A, 1058, pp 166812-1~7 (2024).
H. Mizobata, M. Nozaki, T. Kobayashi, T. Shimura, H. Watanabe,
"Passivation of hole traps in SiO2/GaN metal-oxide-semiconductor devices by high-density magnesium doping", Applied Physics Express, 16, (10), pp 105501-1~4 (2023).
T. Nakanuma, K. Tahara, K. Kutsuki, T. Shimura, H. Watanabe, and T. Kobayashi,
"Control on the density and optical properties of color centers at SiO2/SiC interfaces by oxidation and annealing", Applied Physics Letters, 123, (10), pp 102102-1~5 (2023).
S. Ogawa, H. Mizobata, T. Kobayashi, T. Shimura, H. Watanabe,
"Interface and oxide trap states of SiO2/GaN metal–oxide–semiconductor capacitors and their effects on electrical properties evaluated by deep level transient spectroscopy", Journal of Applied Physics, 134, (9), pp 095704-1~7 (2023).
H. Fujimoto, T. Kobayashi, T. Shimura, and H. Watanabe,
"Improvement of interface properties in SiC(0001) MOS structures by
plasma nitridation of SiC surface followed by SiO2 deposition and CO2 annealing", Applied Physics Express, 16, (7), pp 074004-1~4 (2023).[プレスリリース]
M. Schober, N. Jungwirth, T. Kobayashi, J.A.F. Lehmeyer, M. Krieger, H.B. Weber, M. Bockstedte,
"The Optical Properties of the Carbon Di-Vacancy-Antisite Complex in the Light of the TS Photoluminescence Center", Defect and Diffusion Forum, 426, pp 43~48 (2023).
K. Onishi, T. Kobayashi, H. Mizobata, M. Nozaki, A. Yoshigoe, T. Shimura, and H. Watanabe,
"Formation of high-quality SiO2/GaN interfaces with suppressed Ga-oxide interlayer via sputter deposition of SiO2", Japanese Journal of Applied Physics, 62, (5), pp 050903-1~4 (2023).
B. Mikake, T. Kobayashi, H. Mizobata, M. Nozaki, T. Shimura and H. Watanabe,
"Reduction of interface and oxide traps in SiO2/GaN MOS structures by oxygen and forming gas annealing", Applied Physics Express, 16, (3), pp 031004-1-1~4 (2023).
T. Shimura, R. Yamaguchi, N. Tabuchi, M. Kondoh, M. Kuniyoshi, T. Hosoi, T. Kobayashi and H. Watanabe,
"Controllability of luminescence wavelength from GeSn wires fabricated by laser-induced local liquid phase crystallization on quartz substrates", Japanese Journal of Applied Physics, 62, (SC), pp SC1083-1~5 (2023).
国際学会 / International Conferences
H. Mizobata, M. Nozaki, T. Kobayashi, M. Nozaki, T. Shimura, and H. Watanabe,
" Effects of doped Mg concentrations on the reduction of hole traps in the vicinity of the SiO2/p-GaN MOS interface",
14th International Conference on Nitride Semiconductors (ICNS-14), TuP-ED-20, Nov.14,
(Fukuoka, Nov. 12-17, 2023)
K. Tomigahara, T. Kobayashi, M.Nozaki, T. Shimura, and H. Watanabe,
" Hole Traps in SiO2/GaN MOS structures Evaluated by Below-gap Light Illumination",
14th International Conference on Nitride Semiconductors (ICNS-14), TuP-ED-19, Nov.14,
(Fukuoka, Nov. 12-17, 2023)
H. Iwamoto, T. Nakanuma, H. Hirai, M. Sometani, M. Okamoto, T. Kobayashi, T. Shimura, and H. Watanabe,
" Characterizations of nitrogen profiles and interface properties in NO-nitrided SiO2/SiC(03̅38̅)structures",
2023 International Workshop on DIELECTRIC THIN FILMS FOR FUTURE ELECTRON DEVICES: SCIENCE AND TECHNOLOGY (IWDTF 2023), S6-4, Oct.25,
(Kanazawa, Oct. 23-25, 2023)
T. Kobayashi, T. Shimura and H. Watanabe,
" Ab initio study of oxygen-vacancy defect in 4H-SiC: A potential qubit",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Quantum 2, Sep.20,
(Sorrento, Italy, Sep. 17-22, 2023)
T. Kil, T. Kobayashi, T. Shimura and H. Watanabe,
"Fabrication of SiO2/4H-SiC MOS devices by sputter deposition of SiO2 followed by high-temperature CO2-post deposition annealing",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Poster Mo.B.14, Sep.18,
(Sorrento, Italy, Sep. 17-22, 2023)
T. Nakanuma, K. Tahara, K. Kutsuki, T. Shimura, H. Watanabe and T. Kobayashi,
"Controlling the properties of single photon emitters at SiO2/SiC interfaces by oxidation and annealing",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Process 2, Sep.19,
(Sorrento, Italy, Sep. 17-22, 2023)
H. Fujimoto, T. Kobayashi, Y. Iwakata, T. Shimura and Heiji Watanabe,
"Improved interface properties in SiC(0001) MOS structures by plasma nitridation of SiC surface prior to SiO2 deposition",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Quantum 2, Sep.19,
(Sorrento, Italy, Sep. 17-22, 2023)
A. Suzuki, T. Kobayashi, M. Sometani, M. Okamoto, T. Shimura1 and H. Watanabe,
"Accurate analysis of leakage characteristics of SiC (1-100) MOS devices over a wide temperature range",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Poster Tu.D.11 Sep.19,
(Sorrento, Italy, Sep. 17-22, 2023)
K. Onishi, T. Nakanuma, K. Tahara, K. Kutsuki, T. Shimura, H. Watanabe and T. Kobayashi,
"Formation of color centers at SiO2/SiC interfaces by thermal oxidation and its correlation with electrical properties (student paper)",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Poster Th.D.7 Sep.21,
(Sorrento, Italy, Sep. 17-22, 2023)
S. Kamihata, T. Kobayashi, T. Shimura and H. Watanabe,
"A SiO2/SiC interface formed by direct bonding of SiO2 and SiC",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Poster We.B.17 Sep.20,
(Sorrento, Italy, Sep. 17-22, 2023)
R. Kondo, H. Zeng, M. Sometani, H. Hirai, H. Watanabe and T. Umeda,
"Comparison of polar-face and non-polar faces 4H-SiC/SiO2 interfaces revealed by magnetic resonance and related techniques",
International Conference on Silicon Carbide and Related Materials (ICSCRM 2023), Poster Th.B.11 Sep.21,
(Sorrento, Italy, Sep. 17-22, 2023)
T. Shimura, G. T. Etoh, H. Watanabe,
"Beyond the temporal resolution limit of siliconimage sensors" (Invited),
Ultrafast Imaging and Tracking Instrumentation, Methods and Applications Conference (ULITIMA 2023), Imaging-4, Mar.16,
(SLAC National Accelerator Laboratory, CA, US, Mar. 13-16, 2023)