Spontaneous and stimulated photoluminescence of CdSe/CdS Stark superlattices
Spontaneous and stimulated photoluminescence of CdSe/CdS Stark superlattices
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CdSe/CdS Stark 超晶格的自发和受激光致发光
DOI：
10.1006/spmi.1994.1088
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
C. Klingshirn
中科院分区：
文献类型：
--
作者：
M. Grün;W. Langbein;M. Hetterich;C. Klingshirn
摘要主要利用纳秒光谱技术研究了CdSe/CdS本征Stark超晶格的光致发光特性。随着激发功率的增加，内部压电场的屏蔽作用增加，导致蓝移，对于大周期的样品，蓝移达到近0.4eV。在高于2至20 MW/cm 2的激发水平下，根据温度观察到受激发射。用条纹长度法测量，宝石的最大值约为103 cm-1。
Abstract Photoluminescence properties of CdSe/CdS intrinsic Stark superlattices are studied mainly by means of nanosecond optical spectroscopy. The blue-shift induced by increasing screening of the internal piezoelectric fields with increasing excitation power reaches nearly 0.4eV for samples with large periods. At excitation levels above 2 to 20MW/cm2 stimulated emission is observed depending on temperature. Measurements by the stripe-length method give gem maximum values around 103cm-1.