| Presentation | 2007-10-11 Micro photoluminescence spectroscopy of single InGaN/GaN nanocolumn Akio KANETA, Akinobu KANAI, Mitsuru FUNATO, Yoichi KAWAKAMI, Akihiko KIKUCHI, Katsumi KISHINO, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | The micro photoluminescence (PL) and micro time-resolved PL spectroscopy have been performed on a single InGaN/GaN nanocolumn structure grown by nitrogen plasma assisted molecular beam epitaxy. The PL spectra of single InGaN/GaN nanocolumn consist of about tens sharp emission peaks, which position does not change even if the photo-excitation carrier density increases, unlike the conventional c-plane InGaN/GaN quantum well structures (QWs). Moreover, the PL lifetime of InGaN/GaN nanocolumn is two orders of magnitude faster than that taken at the same wavelength in conventional InGaN/GaN QWs. These results suggest that the piezoelectric polarization field is suppressed in InGaN/GaN nanocolumn, and the small localized centers are formed in InGaN/GaN nanocolumn. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | InGaN/GaN nanocolumn / sharp emission peak / PL lifetime / piezoelectric polarization field / localized centers |
| Paper # | ED2007-157,CPM2007-83,LQE2007-58 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2007/10/4(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) | Micro photoluminescence spectroscopy of single InGaN/GaN nanocolumn |
| Sub Title (in English) | |
| Keyword(1) | InGaN/GaN nanocolumn |
| Keyword(2) | sharp emission peak |
| Keyword(3) | PL lifetime |
| Keyword(4) | piezoelectric polarization field |
| Keyword(5) | localized centers |
| 1st Author's Name | Akio KANETA |
| 1st Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University, Katsura Campus, Kyoto University:CREST, JST() |
| 2nd Author's Name | Akinobu KANAI |
| 2nd Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University, Katsura Campus, Kyoto University |
| 3rd Author's Name | Mitsuru FUNATO |
| 3rd Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University, Katsura Campus, Kyoto University:CREST, JST |
| 4th Author's Name | Yoichi KAWAKAMI |
| 4th Author's Affiliation | Department of Electronic Science and Engineering, Kyoto University, Katsura Campus, Kyoto University:CREST, JST |
| 5th Author's Name | Akihiko KIKUCHI |
| 5th Author's Affiliation | Department of Electrical and Electoronics Engineering, Sophia University:CREST, JST |
| 6th Author's Name | Katsumi KISHINO |
| 6th Author's Affiliation | Department of Electrical and Electoronics Engineering, Sophia University:CREST, JST |
| Date | 2007-10-11 |
| Paper # | ED2007-157,CPM2007-83,LQE2007-58 |
| Volume (vol) | vol.107 |
| Number (no) | 253 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |