| Presentation | 2013-11-28 Quantum Efficiency of p-GaN with NEA surface for high brightness electron source Takuya Maekawa, Yoshio Honda, Hiroshi Amano, Tomohiro Nishitani, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We report the lifetime and high brightness condition of the NEA GaN surface for the high brightness and durability of the electron source using the p-type semiconductor surface with the negative electron affinity. After making the NEA surface on the p-GaN substrate in the ultra-high vacuum, we measured the wavelength and lifetime dependents of the quantum efficiency. We confirmed that the p-GaN substrate has over twenty times as long lifetime as p-GaAs substrate and it has the higher durability performance by the result. In addition, we knew that the quantum efficiency below the bandgap energy is decreased especially with deterioration of the surface function. By these results, NEA photocathode electron source using the p-GaN has the high durability and their deteriorated surface was suitable for becoming single color of the electron beam. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | GaN / GaAs / Photo-cathode / NEA / electron beam source |
| Paper # | ED2013-73,CPM2013-132,LQE2013-108 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2013/11/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | Lasers and Quantum Electronics (LQE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Quantum Efficiency of p-GaN with NEA surface for high brightness electron source |
| Sub Title (in English) | |
| Keyword(1) | GaN |
| Keyword(2) | GaAs |
| Keyword(3) | Photo-cathode |
| Keyword(4) | NEA |
| Keyword(5) | electron beam source |
| 1st Author's Name | Takuya Maekawa |
| 1st Author's Affiliation | Graduate School of Engineering, Nagoya University() |
| 2nd Author's Name | Yoshio Honda |
| 2nd Author's Affiliation | Graduate School of Engineering, Nagoya University |
| 3rd Author's Name | Hiroshi Amano |
| 3rd Author's Affiliation | Graduate School of Engineering, Nagoya University:Akasaki Research Center, Nagoya University |
| 4th Author's Name | Tomohiro Nishitani |
| 4th Author's Affiliation | Synchrotron radiation Research center, Nagoya University |
| Date | 2013-11-28 |
| Paper # | ED2013-73,CPM2013-132,LQE2013-108 |
| Volume (vol) | vol.113 |
| Number (no) | 331 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |