Optical transitions of positively charged excitons and biexcitons in single InAs quantum dots

被引：10

作者：

Chang, X. Y. ^{[1
]}

Dou, X. M. ^{[1
]}

Sun, B. Q. ^{[1
]}

Xiong, Y. H. ^{[1
]}

Niu, Z. C. ^{[1
]}

Ni, H. Q. ^{[1
]}

Jiang, D. S. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Semicond, SKLSM, Beijing 100083, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 10期

关键词：

FINE-STRUCTURE; TRION;

D O I：

10.1063/1.3262607

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We investigate fine structures observed in the optical transitions of positively charged excitons and biexcitons in single quantum dots. We show that double charged biexciton XX2+ emits into a hot double charged exciton X2+* at first, and then relaxes into charged excitons X2+ or X2+ states via phonon scattering or Auger process respectively. XX2+ gives rise to two elliptically polarized emission lines due to the mixing of two lower-levels in the final state. X2+ causes two optical transitions with different polarizations, i.e., a linearly polarized emission with a fine structure splitting of 45 mu eV and a circularly polarized emission with twofold degeneracy. (C) 2009 American Institute of Physics. [doi:10.1063/1.3262607]

引用

页数：4

共 16 条

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