Luminescence of localized biexcitons in Pb1-xCdxI2 mixed crystals

被引：1

作者：

Makino, T ^{[1
]}

Watanabe, M ^{[1
]}

Hayashi, T ^{[1
]}

机构：

[1] KYOTO UNIV, FAC INTEGRATED HUMAN STUDIES, DEPT FUNDAMENTAL SCI, KYOTO 60601, JAPAN

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 1996年 / 65卷 / 09期

关键词：

luminescence; biexciton; localized exciton; mixed crystal;

D O I：

10.1143/JPSJ.65.3049

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Photoluminescence spectra of Pb1-xCdxI2 mixed crystals under intense excitation are investigated in the concentration range of x less than or equal to 0.2. A new luminescence hand located below the exciton transition is observed and attributed to radiative annihilation of biexcitons localized in various potential wells induced by compositional fluctuation. Dependence of the luminescence intensity biexcitons through collision of two localized excitons has been deduced and found to be larger than that in undoped PbI2. Binding energies of the biexciton in these mixed crystals are larger than that of PbI2.

引用

页码：3049 / 3055

页数：7

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