SUPERRADIATIVE EMISSION FROM CDS MICROCRYSTALLITES

被引：14

作者：

MISAWA, K ^{[1
]}

YAO, H ^{[1
]}

HAYASHI, T ^{[1
]}

KOBAYASHI, T ^{[1
]}

机构：

[1] MITSUI TOATSU CHEM CO LTD,CENT RES INST,SAKAE KU,YOKOHAMA 247,JAPAN

来源：

JOURNAL OF CRYSTAL GROWTH | 1992年 / 117卷 / 1-4期

关键词：

D O I：

10.1016/0022-0248(92)90825-4

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We observed the excitonic superradiance from CdS microcrystallites. The decay rate due to the direct recombination of an exciton in the microcrystallite was almost proportional to the particle volume, suggesting its superradiative decay property. The radiative day rate was almost constant below a certain threshold temperature and it decreased linearly with inverse temperature. The threshold temperatures for thermal quenching of microcrystallites of 25 and 29 angstrom in radius were measured to be 45 and 30 K, respectively, which corresponds to the calculated frequencies of radial compression mode of 30 cm-1 (43 K) and 26 cm-1 (37 K), respectively.

引用

页码：617 / 621

页数：5

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