Photoluminescence from zns1-xtex alloys under hydrostatic pressure | |
Fang, ZL; Li, GH; Liu, NZ; Zhu, ZM; Han, HX; Ding, K; Ge, WK; Sou, IK | |
刊名 | Physical review b
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2002-08-15 | |
卷号 | 66期号:8页码:6 |
ISSN号 | 1098-0121 |
DOI | 10.1103/physrevb.66.085203 |
通讯作者 | Fang, zl() |
英文摘要 | Zns1-xtex (0.02less than or equal toxless than or equal to0.3) alloys are studied by photoluminescence under hydrostatic pressure at room temperature. only a wide emission band is observed for each sample. its peak energy is much lower than the corresponding band gap of alloys. these bands are ascribed to the radiative annihilation of excitons bound at te-n(ngreater than or equal to2) isoelectronic centers. the pressure coefficients of the emission bands are smaller than those of alloy band gaps from 48% to 7%. the difference of the pressure coefficient of the emission band and the band gap increases when the binding energy of te-n centers decreases. it seems contrary to our expectation and needs further analysis. the integrated intensities of emission bands decrease with increasing pressure due to the decreasing of the absorption coefficient associated with the te-n centers under pressure. according to this model the stokes shifts between the emission and absorption bands of the te-n centers are calculated, which decrease with the increasing te composition in alloys. |
WOS关键词 | ZNS-TE ; ABSORPTION-EDGE ; MIXED-CRYSTALS ; ZINC-SULFIDE ; THIN-FILMS ; TRANSITION ; EXCITONS ; CENTERS ; STRAINS ; BAND |
WOS研究方向 | Physics |
WOS类目 | Physics, Condensed Matter |
语种 | 英语 |
出版者 | AMERICAN PHYSICAL SOC |
WOS记录号 | WOS:000177972500051 |
内容类型 | 期刊论文 |
URI标识 | http://www.corc.org.cn/handle/1471x/2429218 |
专题 | 半导体研究所 |
通讯作者 | Fang, ZL |
作者单位 | 1.Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Phys, Kowloon, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Fang, ZL,Li, GH,Liu, NZ,et al. Photoluminescence from zns1-xtex alloys under hydrostatic pressure[J]. Physical review b,2002,66(8):6. |
APA | Fang, ZL.,Li, GH.,Liu, NZ.,Zhu, ZM.,Han, HX.,...&Sou, IK.(2002).Photoluminescence from zns1-xtex alloys under hydrostatic pressure.Physical review b,66(8),6. |
MLA | Fang, ZL,et al."Photoluminescence from zns1-xtex alloys under hydrostatic pressure".Physical review b 66.8(2002):6. |
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