BIEXCITON CREATION AND RECOMBINATION IN A GAAS QUANTUM-WELL

被引:112
作者
PHILLIPS, RT [1 ]
LOVERING, DJ [1 ]
DENTON, GJ [1 ]
SMITH, GW [1 ]
机构
[1] ROYAL SIGNALS & RADAR ESTAB,DEF RES AGCY,MALVERN WR14 3PS,WORCS,ENGLAND
来源
PHYSICAL REVIEW B | 1992年 / 45卷 / 08期
关键词
D O I
10.1103/PhysRevB.45.4308
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The conditions required for the generation of biexcitons in quantum wells are discussed, and a model line shape for biexciton recombination is fitted to observed biexciton photoluminescence spectra. It is shown that the biexciton density at a given optical injection rate is much enhanced by resonant generation at either the light-hole or the heavy-hole exciton. Unlike the case of silicon, the biexciton density is found not to vary as the square of the exciton density and this is attributed in part to the short lifetime of the excitons and biexcitons.
引用
收藏
页码:4308 / 4311
页数:4
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