| Presentation | 2005/10/7 Observation of High Internal Quantum Efficiency from Quaternary InAlGaN Quantum Well with 330nm-band UV Emission Hideki HIRAYAMA, Takayoshi TAKANO, Tomoaki OHASHI, Sachie FUJIKAWA, Norihiko KAMATA, Yukihiro KONDO, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | 250-350nm-band high-efficiency ultraviolet (UV) light-emitting diodes (LEDs) or laser diodes (LDs) are very attractive for the application to white lighting, medical fields, etc. Quaternary InAlGaN is important for the emitting layer of UV devices because of the high-efficiency UV emission due to In-segregation effects. In this report, we demonstrate high internal quantum efficiency (IQE) of quaternary InAlGaN quantum well. The IQE of the InAlGaN QW with emission wavelength at 338nm was estimated to be as high as 47% at room temperature. We also obtained IQE value of 12% for InAlGaN QW with 305nm emission. We fabricated quaternary InAlGaN QW LEDs on high-quality sapphire/AlN templates and obtained 1.2mW output power with wavelength at 338nm. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | quaternary InAlGaN / UV-LEDs / In segregation / MOCVD / Internal quantum efficiency |
| Paper # | ED2005-153,CPM2005-140,LQE005-80 |
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| Conference Information | |
| Committee | ED |
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| Conference Date | 2005/10/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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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) | Observation of High Internal Quantum Efficiency from Quaternary InAlGaN Quantum Well with 330nm-band UV Emission |
| Sub Title (in English) | |
| Keyword(1) | quaternary InAlGaN |
| Keyword(2) | UV-LEDs |
| Keyword(3) | In segregation |
| Keyword(4) | MOCVD |
| Keyword(5) | Internal quantum efficiency |
| 1st Author's Name | Hideki HIRAYAMA |
| 1st Author's Affiliation | RIKEN High-Power UV-LED Project() |
| 2nd Author's Name | Takayoshi TAKANO |
| 2nd Author's Affiliation | RIKEN High-Power UV-LED Project |
| 3rd Author's Name | Tomoaki OHASHI |
| 3rd Author's Affiliation | RIKEN High-Power UV-LED Project:Saitama University |
| 4th Author's Name | Sachie FUJIKAWA |
| 4th Author's Affiliation | RIKEN High-Power UV-LED Project |
| 5th Author's Name | Norihiko KAMATA |
| 5th Author's Affiliation | Saitama University |
| 6th Author's Name | Yukihiro KONDO |
| 6th Author's Affiliation | RIKEN High-Power UV-LED Project |
| Date | 2005/10/7 |
| Paper # | ED2005-153,CPM2005-140,LQE005-80 |
| Volume (vol) | vol.105 |
| Number (no) | 326 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |