Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Super-radiation processes of ZnO/Mg0.1Zn0.9O SQW under high-density excitation | |
其他题名 | 论文其他题名 |
Wu C. X.; Lu Y. M.; Shen D. Z.; Zhang Z. Z.; Wei Z. P.; Zheng Z. H.; Zhang J. Y.; Liu Y. C.; Fan X. W. | |
2007 | |
发表期刊 | Journal of Luminescence
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ISSN | 0022-2313 |
卷号 | 122页码:405-407 |
摘要 | ZnO/Mg0.1Zn0.9O single-quantum well (SQW) with 1.5nm ZnO well width was grown on sapphire substrate by plasma-assisted molecular beam epitaxy. The absorption spectrum of the sample at room temperature (RT) shows a sharp absorption edge from MgZnO barrier layer in the ultraviolet region. A stronger exciton emission at 3.392eV from the ZnO well layer was observed in the photoluminescence spectrum at RT, and the exciton binding energy of the ZnO well layer is 70.8 meV. In the PL spectra at 5 K, P-2 band (one exciton was scattered into an excited state with a quantum number 2) located at 3.371 eV was observed. At excitation densities higher than 76 kW/cm(2), the P band shows a typical super-radiation characteristic. With increasing the excitation density further, the P band converges gradually at the saturation value of 3.354eV with significant narrowing. It was attributed to the gradually enhanced exciton-exciton scattering. (c) 2006 Elsevier B.V. All rights reserved. |
收录类别 | SCI ; EI |
语种 | 英语 |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/26519 |
专题 | 中科院长春光机所知识产出 |
推荐引用方式 GB/T 7714 | Wu C. X.,Lu Y. M.,Shen D. Z.,et al. Super-radiation processes of ZnO/Mg0.1Zn0.9O SQW under high-density excitation[J]. Journal of Luminescence,2007,122:405-407. |
APA | Wu C. X..,Lu Y. M..,Shen D. Z..,Zhang Z. Z..,Wei Z. P..,...&Fan X. W..(2007).Super-radiation processes of ZnO/Mg0.1Zn0.9O SQW under high-density excitation.Journal of Luminescence,122,405-407. |
MLA | Wu C. X.,et al."Super-radiation processes of ZnO/Mg0.1Zn0.9O SQW under high-density excitation".Journal of Luminescence 122(2007):405-407. |
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