Thermal activation and thermal transfer of localized excitons in inas self-organized quantum dots
文献类型：期刊论文
| 作者 | Xu, ZY; Lu, ZD; Yuan, ZL; Yang, XP; Zheng, BZ; Xu, JZ; Ge, WK; Wang, Y; Wang, J; Chang, LL |
| 刊名 | Superlattices and microstructures
 |
| 出版日期 | 1998 |
| 卷号 | 23期号:2页码:381-387 |
| 关键词 | Inas/gaas Quantum dots |
| ISSN号 | 0749-6036 |
| 通讯作者 | Xu, zy() |
| 英文摘要 | We have investigated the temperature dependence of photoluminescence (pl) properties of a number of inas/gaas heterostructures with inas layer thickness ranging from 0.5 monolayer (ml) to 3 ml. the temperature dependence of the inas exciton energy and linewidth was found to display a significant difference when the inas layer thickness is smaller or larger than the critical thickness around 1.7 ml, indicating spontaneous formation of quantum dots (qds). a model, involving exciton recombination and thermal activation and transfer, is proposed to explain the experimental data. in the pl thermal quenching study, the measured thermal activation energies of different samples demonstrate that the inas wetting layer may act as a barrier for thermionic emission of carriers in high quality inas multilayers, while in inas monolayers and submonolayers the carriers are required to overcome the gaas barrier to thermally escape from the localized states. (c) 1998 academic press limited. |
| WOS关键词 | PHOTOLUMINESCENCE ; INGAAS/GAAS ; RELAXATION ; GROWTH ; WELLS |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Condensed Matter |
| 语种 | 英语 |
| WOS记录号 | WOS:000072396800030 |
| 出版者 | ACADEMIC PRESS LTD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2428585 |
| 专题 | 半导体研究所 |
| 通讯作者 | Xu, ZY |
| 作者单位 | 1.Chinese Acad Sci, Inst Semicond, NLSM, Beijing 100083, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong |
| 推荐引用方式 GB/T 7714 | Xu, ZY,Lu, ZD,Yuan, ZL,et al. Thermal activation and thermal transfer of localized excitons in inas self-organized quantum dots[J]. Superlattices and microstructures,1998,23(2):381-387. |
| APA | Xu, ZY.,Lu, ZD.,Yuan, ZL.,Yang, XP.,Zheng, BZ.,...&Chang, LL.(1998).Thermal activation and thermal transfer of localized excitons in inas self-organized quantum dots.Superlattices and microstructures,23(2),381-387. |
| MLA | Xu, ZY,et al."Thermal activation and thermal transfer of localized excitons in inas self-organized quantum dots".Superlattices and microstructures 23.2(1998):381-387. |
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来源：半导体研究所
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