| Presentation | 2009-11-19 Exciton emission mechanism in AlN epitaxial films Takeyoshi ONUMA, Kouji HAZU, Takayuki SOTA, Akira UEDONO, Shigefusa F. CHICHIBU, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Exciton fine structures were observed in partially polarized optical reflectance and cathodoluminescence (CL) spectra of AlN epilayers grown by low-pressure metalorganic vapor phase epitaxy on (0001) Al_2O_3 substrates. A few free and four bound exciton lines were clearly resolved in the low-temperature CL spectra of the lowest threading dislocation density (2×10^8cm^<-2>) AlN film. From the energy difference between the ground- and the first-excited states, the hydrogenic A-exciton binding energy in the compressively strained (Δa/a≅-1.68%) AlN was estimated to be 51meV. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | AlN / Polarization / Reflectance / Cathodoluminescence |
| Paper # | ED2009-134,CPM2009-108,LQE2009-113 |
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| Conference Information | |
| Committee | LQE |
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| Conference Date | 2009/11/12(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) | Exciton emission mechanism in AlN epitaxial films |
| Sub Title (in English) | |
| Keyword(1) | AlN |
| Keyword(2) | Polarization |
| Keyword(3) | Reflectance |
| Keyword(4) | Cathodoluminescence |
| 1st Author's Name | Takeyoshi ONUMA |
| 1st Author's Affiliation | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University() |
| 2nd Author's Name | Kouji HAZU |
| 2nd Author's Affiliation | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University |
| 3rd Author's Name | Takayuki SOTA |
| 3rd Author's Affiliation | Department of Electrical Engineering and Bioscience, Waseda University |
| 4th Author's Name | Akira UEDONO |
| 4th Author's Affiliation | Institute of Applied Physics, University of Tsukuba |
| 5th Author's Name | Shigefusa F. CHICHIBU |
| 5th Author's Affiliation | Institute of Multidisciplinary Research for Advanced Materials, Tohoku University |
| Date | 2009-11-19 |
| Paper # | ED2009-134,CPM2009-108,LQE2009-113 |
| Volume (vol) | vol.109 |
| Number (no) | 290 |
| Page | pp.pp.- |
| #Pages | 4 |
| Date of Issue | |