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species at SiO/Si interfaces in Si dry oxidation; Comparison between p-Si(001) and n-Si(001) surfacesTsuda, Yasutaka; Yoshigoe, Akitaka; Ogawa, Shuichi*; Sakamoto, Tetsuya*; Yamamoto, Yoshiki*; Yamamoto, Yukio*; Takakuwa, Yuji*
Journal of Chemical Physics, 157(23), p.234705_1 - 234705_21, 2022/12
Times Cited Count：0 Percentile：0.01(Chemistry, Physical)(001) surface with supersonic seeded oxygen molecular beamKatsube, Daiki*; Ono, Shinya*; Inami, Eiichi*; Yoshigoe, Akitaka; Abe, Masayuki*
Vacuum and Surface Science, 65(11), p.526 - 530, 2022/11
The oxidation of oxygen vacancies at the surface of anatase TiO (001) was investigated by synchrotron radiation photoelectron spectroscopy and supersonic O beam (SSMB). The oxygen vacancies at the top surface and subsurface could be eliminated by the supply of hyperthermal oxygen molecules. Oxygen vacancies are present on the surface of anatase TiO(001) when it is untreated before transfer to a vacuum chamber. These vacancies, which are stable in the ambient condition, could also be effectively eliminated by using oxygen SSMB. This result is promising as a surface processing for various functional oxides.
0) MOS devicesNakanuma, Takato*; Kobayashi, Takuma*; Hosoi, Takuji*; Sometani, Mitsuru*; Okamoto, Mitsuo*; Yoshigoe, Akitaka; Shimura, Takayoshi*; Watanabe, Heiji*
Applied Physics Express, 15(4), p.041002_1 - 041002_4, 2022/04
Times Cited Count：5 Percentile：48.5(Physics, Applied)The leakage current and flat-band voltage (VFB) instability of NO-nitrided SiC (110) (a-face) MOS devices were systematically investigated. Although NO nitridation is effective in improving the interface properties, we found that it reduces the onset field of Fowler-Nordheim (F-N) current by about 1 MVcm
, leading to pronounced leakage current. Synchrotron X-ray photoelectron spectroscopy revealed that the nitridation reduces the conduction band offset at the SiO/SiC interface, corroborating the above finding. Furthermore, systematical positive and negative bias stress tests clearly indicated the VFB instability of nitrided a-face MOS devices against electron and hole injection.
Aoki, Hiroyuki; Liu, Y.*; Yamashita, Takashi*
Scientific Reports (Internet), 11(1), p.22711_1 - 22711_9, 2021/11
Times Cited Count：7 Percentile：57.2(Multidisciplinary Sciences)Kusaka, Ryoji
Journal of Nuclear and Radiochemical Sciences (Internet), 20, p.28 - 31, 2020/06
Yoshigoe, Akitaka
X-sen Kodenshi Bunkoho, p.271 - 282, 2018/12
Based on the series of author's studies, the author explains the time-resolved synchrotron radiation X-ray photoelectron spectroscopy and supersonic oxygen molecular beam study on the adsorption reaction dynamics of oxygen molecules at the Si single crystal surface in the section 5.10 of the new textbook "X-ray Photoelectron Spectroscopy" (Kodan-sha) edited by Yuji Takakuwa.
Yamada, Norifumi*; Takeda, Masayasu; Yamazaki, Dai
Hamon, 24(4), p.288 - 295, 2014/11
no abstracts in English
Mizuki, Junichiro; Konishi, Hiroyuki; Nishihata, Yasuo; Takahashi, Masamitsu; Suzuya, Kentaro; Matsumoto, Norimasa; Yoneda, Yasuhiro
Nihon Kessho Gakkai-Shi, 42(1), p.68 - 75, 2000/02
no abstracts in English
Mizuki, Junichiro
Zairyo Kagaku, 35(3), p.155 - 163, 1998/05
no abstracts in English
Mizuki, Junichiro
Radioisotopes, 47(4), p.344 - 352, 1998/04
no abstracts in English
Mizuki, Junichiro
Kokido Hoshako Ga Mezasu Senryakuteki Oyo Kenkyu, p.149 - 166, 1998/00
no abstracts in English
Okane, Tetsuo; Yamada, Mitsuki*; Suzuki, S.*; Sato, S.*; Kinoshita, Toyohiko*; Kakizaki, A.*; Ishii, T.*; Kobayashi, Takane*; Shimoda, S.*; Iwaki, M.*; et al.
Journal of Electron Spectroscopy and Related Phenomena, 80, p.241 - 244, 1996/05
Times Cited Count：4 Percentile：26.09(Spectroscopy)no abstracts in English
Takeda, Masayasu
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Takeda, Masayasu
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no abstracts in English
Yano, Masahiro; Suzuki, Shota; Uozumi, Yuki; Asaoka, Hidehito
no journal, ,
no abstracts in English
Takeda, Masayasu; Yamazaki, Dai; Sakasai, Kaoru; Soyama, Kazuhiko
no journal, ,
no abstracts in English
Takeda, Masayasu
no journal, ,
no abstracts in English
Takeda, Masayasu
no journal, ,
no abstracts in English
Yoshigoe, Akitaka
no journal, ,
The 2019 workshop on synchrotron radiation equipment will be held by JAEA, NIMS and QST. They are the members of a nanotechnology platform project of the Ministry of Education, Culture, Sports, Science and Technology. In this lecture, surface chemistry experiment station will be explained to find new users for the surface and interface nanotechnoly research.
