High-temperature electron-hole liquid and dynamics of Fermi excitons in a In0.65Al0.35As/Al0.4Ga0.6As quantum dot array
文献类型：期刊论文
| 作者 | Ding, CR ; Wang, HZ ; Xu, B |
| 刊名 | physical review b
 |
| 出版日期 | 2005 |
| 卷号 | 71期号:8页码:art.no.085304 |
| 关键词 | DROPLET FORMATION |
| ISSN号 | 1098-0121 |
| 通讯作者 | wang, hz, zhongshan sun yat sen univ, state key lab optoelect mat & technol, guangzhou 510275, peoples r china. 电子邮箱地址: stswhz@zsu.edu.cn |
| 中文摘要 | state-filling effects of the exciton in a in0.65al0.35as/al0.4ga0.6as quantum dot array are observed by quantum dot array photolumineseence at a sample temperature of 77 k. the exciton emission at low excitation density is dominated by the radiative recombination of the states in the s shell and at high excitation density the emission mainly results from the radiative recombination of the exciton state in the p shell. the spectral interval between the states in the s and p shells is about 30-40 mcv. the time resolved photoluminescence shows that the decay time of exciton states in the p shell is longer than that of exciton states in the s shell, and the emission intensity of the exciton state in the p shell is superlinearly dependent on excitation density. furthermore, electron-hole liquid in the quantum dot array is observed at 77 k, which is a much higher temperature than that in bulk. the emission peak of the. recombination, of electron-hole liquid has an about 200 mev redshift from the exciton fluorescence. two excitation density-dependent emission peaks at 1.56 and 1.59 ev are observed, respectively, which result from quantum confinement effects in qds. the emission intensity of electron-hole liquid is directly proportional to the cubic of excitation densities and its decay time decreases significantly at the high excitation density. |
| 学科主题 | 半导体材料 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2010-03-17 |
| 源URL | [http://ir.semi.ac.cn/handle/172111/8824]  |
| 专题 | 半导体研究所_中国科学院半导体研究所（2009年前） |
| 推荐引用方式 GB/T 7714 | Ding, CR,Wang, HZ,Xu, B. High-temperature electron-hole liquid and dynamics of Fermi excitons in a In0.65Al0.35As/Al0.4Ga0.6As quantum dot array[J]. physical review b,2005,71(8):art.no.085304. |
| APA | Ding, CR,Wang, HZ,&Xu, B.(2005).High-temperature electron-hole liquid and dynamics of Fermi excitons in a In0.65Al0.35As/Al0.4Ga0.6As quantum dot array.physical review b,71(8),art.no.085304. |
| MLA | Ding, CR,et al."High-temperature electron-hole liquid and dynamics of Fermi excitons in a In0.65Al0.35As/Al0.4Ga0.6As quantum dot array".physical review b 71.8(2005):art.no.085304. |
入库方式： OAI收割
来源：半导体研究所
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