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Picosecond time-resolved studies of defect-related recombination in high resistivity CdTe, CdZnTe

机译:皮秒时间分辨的高电阻率CdTe,CdZnTe缺陷相关复合研究

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High resistivity CdTe:In and CdZnTe samples were studied by means of continuos and picosecond time-resolved photoluminescence (PL). Detected PL signal is affected by non-radiative trapping into defects, while radiative recombination has an excitonic character. Time-resolved PL can be described by two lifetimes: the first (30-60 ps) takes into account fast non radiative recombination, the second in the range 200-300 ps can be related to exciton decay.
机译:通过连续和皮秒时间分辨光致发光(PL)研究了高电阻率CdTe:In和CdZnTe样品。检测到的PL信号受非辐射陷入缺陷的影响,而辐射复合具有激子特性。时间分辨的PL可以用两个寿命来描述:第一个寿命(30-60 ps)考虑到了快速的非辐射复合,第二个寿命在200-300 ps范围内可能与激子衰减有关。

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