| Presentation | 2012-11-29 Estimation of Surface Fermi level differences in surface-modified GaN crystals Yohei SUGIURA, Ryosuke AMIYA, Daiki TAJIMI, Takeyoshi ONUMA, Tomohiro YAMAGICHI, Tohru HONDA, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Surface-Fermi-level differences in hexagonal (0001) GaN as a function of the amount of surface oxides were estimated using AR-XPS. First, the binding energy peaks around the valence band of the GaN was investigated using AR-XPS. The intensity changing behavior was equal to the qualitative understanding for the peak attributions, which indicates that the escape depth of the XPS signals depends on the observed angles. Next, the electric field in the surface depletion layer in the Ga-face GaN was discussed using the ARXPS spectra. The surface Fermi energy of the GaN crystal was changed towards the valence-band side by increasing the amount of surface oxides. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | GaN / gallium nitride / XPS / ARXPS / electric field in depletion layer |
| Paper # | ED2012-68,CPM2012-125,LQE2012-96 |
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| Conference Information | |
| Committee | ED |
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| Conference Date | 2012/11/22(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Paper Information | |
| Registration To | Electron Devices (ED) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of Surface Fermi level differences in surface-modified GaN crystals |
| Sub Title (in English) | |
| Keyword(1) | GaN |
| Keyword(2) | gallium nitride |
| Keyword(3) | XPS |
| Keyword(4) | ARXPS |
| Keyword(5) | electric field in depletion layer |
| 1st Author's Name | Yohei SUGIURA |
| 1st Author's Affiliation | Graduate School of Engineering, Kogakuin University() |
| 2nd Author's Name | Ryosuke AMIYA |
| 2nd Author's Affiliation | Graduate School of Engineering, Kogakuin University |
| 3rd Author's Name | Daiki TAJIMI |
| 3rd Author's Affiliation | Graduate School of Engineering, Kogakuin University |
| 4th Author's Name | Takeyoshi ONUMA |
| 4th Author's Affiliation | Graduate School of Engineering, Kogakuin University:Tokyo National College of Technology |
| 5th Author's Name | Tomohiro YAMAGICHI |
| 5th Author's Affiliation | Graduate School of Engineering, Kogakuin University |
| 6th Author's Name | Tohru HONDA |
| 6th Author's Affiliation | Graduate School of Engineering, Kogakuin University |
| Date | 2012-11-29 |
| Paper # | ED2012-68,CPM2012-125,LQE2012-96 |
| Volume (vol) | vol.112 |
| Number (no) | 327 |
| Page | pp.pp.- |
| #Pages | 3 |
| Date of Issue | |