Atomic-site-selective study of local electronic states and electronic-excitation-induced dynamics of molecules adsorbed on semiconductor surfaces
Project/Area Number |
24360021
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Partial Multi-year Fund |
Section | 一般 |
Research Field |
Thin film/Surface and interfacial physical properties
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Research Institution | High Energy Accelerator Research Organization |
Principal Investigator |
MASE Kazuhiko 大学共同利用機関法人高エネルギー加速器研究機構, 物質構造科学研究所, 准教授 (40241244)
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Co-Investigator(Kenkyū-buntansha) |
OZAWA Kenichi 東京工業大学, 大学院理工学研究科, 助教 (00282822)
KAKIUCHI Takuhiro 愛媛大学, 大学院理工学研究科, 助教 (00508757)
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Co-Investigator(Renkei-kenkyūsha) |
NAGAOKA Shin-ichi 愛媛大学, 大学院理工学研究科, 教授 (30164403)
OKUDAIRA Koji 千葉大学, 大学院融合科学研究科, 准教授 (50202023)
TANAKA Masatoshi 横浜国立大学, 大学院工学研究院, 教授 (90130400)
OKUSAWA Makoto 群馬大学, 教育学部, 教授 (50112537)
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Project Period (FY) |
2012-04-01 – 2015-03-31
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Project Status |
Completed (Fiscal Year 2014)
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Budget Amount *help |
¥19,630,000 (Direct Cost: ¥15,100,000、Indirect Cost: ¥4,530,000)
Fiscal Year 2014: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2012: ¥14,040,000 (Direct Cost: ¥10,800,000、Indirect Cost: ¥3,240,000)
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Keywords | 表面 / 局所電子状態 / 電子励起ダイナミクス / 光電子分光 / オージェ電子分光 / コインシデンス分光 / 半導体 / 吸着分子 / 半導体表面 / 電子励起誘起イオン脱離 |
Outline of Final Research Achievements |
We measured Si-L23VV-Auger Si-2p-photoelectron coincidence spectra of clean Si(111)-7x7, H/Si(111)-7x7, and H2O/Si(111)-7x7 surfaces. The results suggest that clean Si(111)-7x7 is metallic, H/Si(111)-7x7 is semiconductive, and H2O/Si(111)-7x7 has an intermediate property. Then, we remodeled the coincidence analyzer and improved the energy resolution (E/DE) of Auger electrons and photoelectrons to 84 and 55, respectively. Decay processes of Si 2s core holes in a clean Si(111)-7x7 surface were investigated using coincidence measurements of Si Auger electrons and Si 2s photoelectrons at a photon energy of 180 eV. We showed that Si 2s core holes exhibit two nonradiative decay processes: the first being a Si L1L23V Coster-Kronig transition followed by delocalization of the valence hole and Si L23VV Auger decay, and the second being Si L1VV Auger decay. The branching ratio of the Si L1L23V Coster-Kronig transition to the Si L1VV Auger decay is estimated to be 96.7% ± 0.4% to 3.2% ± 0.4%.
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Report
(4 results)
Research Products
(13 results)
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[Journal Article] Decay Processes of Si 2s Core Holes in Si(111)-7×7 Revealed by Si Auger Electron Si 2s Photoelectron Coincidence Measurements2014
Author(s)
K. Mase, K. Hiraga, S. Arae, R. Kanemura, Y. Takano, K. Yanase, Y. Ogashiwa, N. Shohata, N. Kanayama, T. Kakiuchi, S. Ohno, D. Sekiba, K. K. Okudaira, M. Okusawa and M. Tanaka
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Journal Title
J. Phys. Soc. Jpn.
Volume: 83
Issue: 9
Pages: 094704-094704
DOI
NAID
Related Report
Peer Reviewed / Acknowledgement Compliant
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[Journal Article] Attempts to Improve the Sensitivity and the Energy Resolution of an Analyzer for Auger Photoelectron Coincidence Spectroscopy and Electron Ion Coincidence Spectroscopy2013
Author(s)
Sadanori Arae, Rui Kanemura, Kenta Hiraga, Yosuke Ogashiwa, Kohtaro Yanase, Noritsugu Kanayama, Shinya Ohno, Takuhiro Kakiuchi, Kazuhiko Mase, Koji K. Okudaira, Makoto Okusawa, Masatoshi Tanaka
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Journal Title
Journal of the Vacuum Society of Japan
Volume: 56
Issue: 12
Pages: 507-510
DOI
NAID
ISSN
1882-2398, 1882-4749
Related Report
Peer Reviewed
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[Journal Article] Site-specific ion desorption from condensed F3SiCD2CH2Si(CH3)3 induced by Si-2p core-level ionizations studied with photoelectron photoion coincidence (PEPICO) spectroscopy, Auger photoelectron coincidence spectroscopy (APECS) and Auger electron photoion coincidence (AEPICO) spectroscopy2013
Author(s)
Kazuhiko Mase, Eiichi Kobayashi, Akira Nambu, Takuhiro Kakiuchi, Osamu Takahashi, Kiyohiko Tabayashi, Joji Ohshita, Shogo Hashimoto, Masatoshi Tanaka, Shin-ichi Nagaoka
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Journal Title
Surf. Sci.
Volume: 607
Pages: 174-180
DOI
Related Report
Peer Reviewed
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[Presentation] Decay Processes of Si 2s Core Holes in Si(111)-7×7 Revealed by Si Auger Electron Si 2s Photoelectron Coincidence Measurements2014
Author(s)
K. Mase, K. Hiraga, S. Arae, R. Kanemura, Y. Takano, K. Yanase, Y. Ogashiwa, N. Shohata, N. Kanayama, T. Kakiuchi, S. Ohno, D. Sekiba, K. Okudaira, M. Okusawa, M, Tanaka
Organizer
Pacific Rim Symposium on Surfaces, Coatings and Interfaces (PacSurf 2014)
Place of Presentation
Hawaii, USA
Year and Date
2014-12-09
Related Report
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