Time-resolved photoluminescence of te isoelectronic center in zns
文献类型：期刊论文
| 作者 | Yang, XD; Xu, ZY; Luo, XD; Fang, ZL; Li, GH; Su, YQ; Ge, WK |
| 刊名 | Acta physica sinica
 |
| 出版日期 | 2005-05-01 |
| 卷号 | 54期号:5页码:2272-2276 |
| 关键词 | Zns Isoelectronic center Time-resolved photoluminescence Exciton localization |
| ISSN号 | 1000-3290 |
| 通讯作者 | Yang, xd(young@red.semi.ac.en) |
| 英文摘要 | The recombination dynamics of localized exciton in zns1-x te-x ternary alloys has been investigated by time-resolved photoluminescence (pl) in a large te concentration range from 0.005 to 0.85. it is found that the radiative recombination lifetimes of different te isoelectronic centers show a significant difference, varying from a few nanoseconds to tens of nanosecond. the lifetime reaches a maximum of ∼ 40 ns in the sample of x = 0.15. the present results could be understood in terms of the exciton localization effect. when the te concentration is small, the te isoelectronic centers evolve gradually from a single te impurity (te-1) to the te clusters (te-n). the exciton localization is enhanced, resulting in the increase of exciton recombination lifetime. when the te concentration is further increased, the te clusters (te-n) become large enough to hybridize the te localized states and the host valence band states. therefore i the excitons bound to te isoelectronic centers become more or less delocalized, resulting in a shorter lifetime. furthermore, the concentration dependence of the exciton binding energy and the pl intensity variation with temperature have been mearsured. the results further confirm the above conclusion. |
| WOS关键词 | ALLOYS ; BAND ; SEMICONDUCTORS ; LIFETIMES ; STATES |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000229049900056 |
| 出版者 | CHINESE PHYSICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2426425 |
| 专题 | 半导体研究所 |
| 通讯作者 | Yang, XD |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, XD,Xu, ZY,Luo, XD,et al. Time-resolved photoluminescence of te isoelectronic center in zns[J]. Acta physica sinica,2005,54(5):2272-2276. |
| APA | Yang, XD.,Xu, ZY.,Luo, XD.,Fang, ZL.,Li, GH.,...&Ge, WK.(2005).Time-resolved photoluminescence of te isoelectronic center in zns.Acta physica sinica,54(5),2272-2276. |
| MLA | Yang, XD,et al."Time-resolved photoluminescence of te isoelectronic center in zns".Acta physica sinica 54.5(2005):2272-2276. |
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来源：半导体研究所
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