Dominance of charged excitons in single-quantum-dot photoluminescence spectra -: art. no. 041302

被引：17

作者：

Lomascolo, M

Vergine, A

Johal, TK

Rinaldi, R

Passaseo, A

Cingolani, R

Patanè, S

Labardi, M

Allegrini, M

Troiani, F

Molinari, E

机构：

[1] Univ Lecce, INFM, NNL Natl Nanotechnol Lab, I-73100 Lecce, Italy

[2] CNR, IMM, I-73100 Lecce, Italy

[3] Univ Messina, Dip Fis Mat & Tecnol Fisiche Avanzate, I-98166 Messina, Italy

[4] INFM, I-98166 Messina, Italy

[5] Univ Pisa, Dip Fis Enrici Fermi, I-56127 Pisa, Italy

[6] INFM, I-56127 Pisa, Italy

[7] Univ Modena & Reggio Emilia, Dip Fis, I-41100 Modena, Italy

[8] INFM, Natl Res Ctr Nanostruct & Biosyst Surfaces S3, I-41100 Modena, Italy

来源：

PHYSICAL REVIEW B | 2002年 / 66卷 / 04期

关键词：

D O I：

10.1103/PhysRevB.66.041302

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Single InxGa1-xAs/GaAs quantum dot photoluminescence spectra, obtained by low-temperature near-field scanning optical microscopy, are compared with theoretically derived optical spectra. The spectra show shell filling as well as few-particle fine structure associated with neutral and charged multiexcitons, in good agreement with the many-body calculations. There appears to be a greater tendency to charged-exciton formation, which is discussed in terms of the high diffusivity of photogenerated electrons.

引用

收藏

页码：413021 / 413024

页数：4

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