EXCITONIC STATES OF PB ION CLUSTERS IN PB1-XCDXI2 SOLID-SOLUTIONS STUDIED WITH TIME-RESOLVED EMISSION-SPECTRA

被引：11

作者：

HAYASHI, T ^{[1
]}

GU, P ^{[1
]}

WATANABE, M ^{[1
]}

机构：

[1] KYOTO UNIV, DEPT PHYS, KYOTO 606, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1994年 / 63卷 / 06期

关键词：

PB1-XCDXI2; CLUSTER; LUMINESCENCE; EXCITON; TIME-RESOLVED MEASUREMENT;

D O I：

10.1143/JPSJ.63.2089

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Emission and excitation spectra of the luminescence in Pb1-xCdxI2 solid solutions have been investigated in the range of x between 0.5 and 0.8. Emission band observed near the absorption edge is attributed to the luminescence associated with Pb ion clusters dispersed in CdI2 matrix. Time-resolved measurements of the emission spectra reveal that the emission band consists of singlet and triplet components. The energy split between the singlet and triplet states is found to increase with decrease in the cluster size. The result is discussed in relation to an exciton Bohr radius.

引用

页码：2089 / 2092

页数：4

共 9 条

[1] ELECTRONIC WAVE-FUNCTIONS IN SEMICONDUCTOR CLUSTERS - EXPERIMENT AND THEORY [J].