| Presentation | 2015-08-04 Electrochemical formation and UV photoresponse properties of GaN porous structures Hirofumi Kida, Yusuke Kumazaki, Zenji Yatabe, Taketomo Sato, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Photoresponse and photoabsorption properties of GaN porous structures were investigated by measuring photocurrent and spectroscopic photoabsorption under monochromatic light with various wavelengths. The measured photocurrents on the porous GaN electrode were larger than those on the planar electrodes due to the unique features of the former electrode, such as large surface area and low photoreflectance properties. Moreover, the photocurrents were observed even under illumination with wavelength of 380 nm, corresponding to photon energy of 3.26 eV, which is 130 meV lower than the bandgap energy of bulk GaN. The observed redshift of the photoabsorption edge can be qualitatively explained by the Franz-Keldysh effect. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | porous structure / gallium nitride / photocurrents / redshift of bandedge photoabsorption |
| Paper # | ED2015-53 |
| Date of Issue | 2015-07-27 (ED) |
| Conference Information | |
| Committee | ED |
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| Conference Date | 2015/8/3(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kikai-Shinko-Kaikan Bldg. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Sensor device, MEMS, etc |
| Chair | Koichi Maezawa(Univ. of Toyama) |
| Vice Chair | Kunio Tsuda(Toshiba) |
| Secretary | Kunio Tsuda(NEC) |
| Assistant | Manabu Arai(New JRC) / Masataka Higashiwaki(NICT) |
| Paper Information | |
| Registration To | Technical Committee on Electron Device |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Electrochemical formation and UV photoresponse properties of GaN porous structures |
| Sub Title (in English) | |
| Keyword(1) | porous structure |
| Keyword(2) | gallium nitride |
| Keyword(3) | photocurrents |
| Keyword(4) | redshift of bandedge photoabsorption |
| 1st Author's Name | Hirofumi Kida |
| 1st Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 2nd Author's Name | Yusuke Kumazaki |
| 2nd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 3rd Author's Name | Zenji Yatabe |
| 3rd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 4th Author's Name | Taketomo Sato |
| 4th Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| Date | 2015-08-04 |
| Paper # | ED2015-53 |
| Volume (vol) | vol.115 |
| Number (no) | ED-170 |
| Page | pp.pp.51-54(ED), |
| #Pages | 4 |
| Date of Issue | 2015-07-27 (ED) |