FLUORESCENCE MECHANISM OF HIGHLY MONODISPERSE Q-SIZED CDS COLLOIDS

被引：94

作者：

EYCHMULLER, A

HASSELBARTH, A

KATSIKAS, L

WELLER, H

机构：

[1] Hahn-Meitner-Institut, Abteilung Photochemie, 1000 Berlin 39

来源：

JOURNAL OF LUMINESCENCE | 1991年 / 48-9卷 / pt 2期

关键词：

D O I：

10.1016/0022-2313(91)90232-K

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The fluorescence properties of quantum-sized CdS colloids were investigated by means of static and time-resolved low temperature fluorescence spectroscopy. The samples investigated had high fluorescence quantum yields already at room temperature and exhibited exclusively excitonic fluorescence. A mechanism is presented which explains both the static and time-resolved fluorescence behaviour. The fluorescence is described as delayed fluorescence occurring by detrapping of electrons. Extremely shallow traps having trap depths of a few meV are discussed.

引用

页码：745 / 749

页数：5

共 15 条

[1] ZERO-DIMENSIONAL EXCITONS IN SEMICONDUCTOR CLUSTERS [J].