Recombination kinetics of Te isoelectronic centers in ZnSTe

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	Recombination kinetics of Te isoelectronic centers in ZnSTe
	Yang XD ; Xu ZY ; Sun Z ; Sun BQ ; Li GH ; Sou IK ; Ge WK
刊名	applied physics letters
	2005
卷号	86 期号:5 页码:art.no.052107
关键词	ZINC-SULFIDE
ISSN号	0003-6951
通讯作者	yang, xd, chinese acad sci, inst semicond, state key lab superlattices & microstruct, pob 912, beijing 100083, peoples r china. 电子邮箱地址: zyxu@red.semi.ac.cn
中文摘要	the recombination kinetics of te isoelectronic centers in zns1-xtex (0.0065 less than or equal to x less than or equal to 0.85) alloys is studied by time-resolved photoluminescence (trpl) at low temperature. the measured radiative recombination lifetimes of different te bound exciton states are quite different, varying from a few nanoseconds to tens of nanosecond. as the bound exciton state evolves from a single te impurity (te-1) to larger te clusters (te-n, n=2,3,4), the recombination lifetime increases. it reaches maximum (similar to40 ns) for the te-4 bound states at x=0.155. the increase of the exciton lifetime is attributed to the increasing exciton localization effect caused by larger localization potential. in the large te composition range (x > 0.155), the exciton recombination lifetime decreases monotonically with te composition. it is mainly due to the hybridization between the te localized states and the host valence band states. the composition dependences of the exciton binding energy and the photoluminescence (pl) line width show the similar tendency that further support the localization picture obtained from the trpl measurement. (c) 2005 american institute of physics.
学科主题	半导体物理
收录类别	SCI
语种	英语
公开日期	2010-03-17
内容类型	期刊论文
源URL	[http://ir.semi.ac.cn/handle/172111/8862]
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	Yang XD,Xu ZY,Sun Z,et al. Recombination kinetics of Te isoelectronic centers in ZnSTe[J]. applied physics letters,2005,86(5):art.no.052107.
APA	Yang XD.,Xu ZY.,Sun Z.,Sun BQ.,Li GH.,...&Ge WK.(2005).Recombination kinetics of Te isoelectronic centers in ZnSTe.applied physics letters,86(5),art.no.052107.
MLA	Yang XD,et al."Recombination kinetics of Te isoelectronic centers in ZnSTe".applied physics letters 86.5(2005):art.no.052107.