Optical identification of electronic state levels of an asymmetric inas/ingaas/gaas dot-in-well structure
文献类型：期刊论文
| 作者 | Zhou,Xiaolong; Chen,Yonghai; Xu,Bo |
| 刊名 | Nanoscale research letters
 |
| 出版日期 | 2011-04-08 |
| 卷号 | 6期号:1 |
| ISSN号 | 1556-276X |
| DOI | 10.1186/1556-276x-6-317 |
| 通讯作者 | Zhou,xiaolong(zhouxl06@semi.ac.cn) |
| 英文摘要 | Abstractwe have studied the electronic state levels of an asymmetric inas/ingaas/gaas dot-in-well structure, i.e., with an in0.15ga0.85as quantum well (qw) as capping layer above inas quantum dots (qds), via temperature-dependent photoluminescence, photo-modulated reflectance, and rapid thermal annealing (rta) treatments. it is shown that the carrier transfer via wetting layer (wl) is impeded according to the results of temperature dependent peak energy and line width variation of both the ground states (gs) and excited states (es) of qds. the quenching of integrated intensity is ascribed to the thermal escape of electron from the dots to the complex in0.15ga0.85as qw + inas wl structure. additionally, as the rta temperature increases, the peak of pl blue shifts and the full width at half maximum shrinks. especially, the intensity ratio of gs to es reaches the maximum when the energy difference approaches the energy of one or two lo phonon(s) of inas bulk material, which could be explained by phonon-enhanced inter-sublevels carrier relaxation in such asymmetric dot-in-well structure.pacs: 73.63.kv; 73.61.ey; 78.67.hc; 81.16.dn |
| 语种 | 英语 |
| WOS记录号 | BMC:10.1186/1556-276X-6-317 |
| 出版者 | Springer New York |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2426170 |
| 专题 | 半导体研究所 |
| 通讯作者 | Zhou,Xiaolong |
| 作者单位 | Chinese Academy of Sciences; Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors |
| 推荐引用方式 GB/T 7714 | Zhou,Xiaolong,Chen,Yonghai,Xu,Bo. Optical identification of electronic state levels of an asymmetric inas/ingaas/gaas dot-in-well structure[J]. Nanoscale research letters,2011,6(1). |
| APA | Zhou,Xiaolong,Chen,Yonghai,&Xu,Bo.(2011).Optical identification of electronic state levels of an asymmetric inas/ingaas/gaas dot-in-well structure.Nanoscale research letters,6(1). |
| MLA | Zhou,Xiaolong,et al."Optical identification of electronic state levels of an asymmetric inas/ingaas/gaas dot-in-well structure".Nanoscale research letters 6.1(2011). |
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来源：半导体研究所
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