G{cyrillic}-G{cyrillic} photoluminescence from type II short-period GaAs-AlAs superlattices

Weikun Ge; Janet L. Mackay; L. N. Pfeiffer; K. W. West

doi:10.1016/0022-2313(91)90028-T

G{cyrillic}-G{cyrillic} photoluminescence from type II short-period GaAs-AlAs superlattices

Weikun Ge, Janet L. Mackay, L. N. Pfeiffer, K. W. West

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

Type II short-period (GaAs)_n-(AlAs)_n superlattices have an indirect band gap with the X conduction band minimum in the AlAs layer and the G{cyrillic} valence band maximum in the GaAs layer. The transfer rate of excited electrons from G{cyrillic} to X is high compared to the direct G{cyrillic}-G{cyrillic} recombination rate, so the indirect X-G{cyrillic} transition predominates in the photoluminescence spectra. The G{cyrillic}-G{cyrillic} photoluminescence is very weak and has not been reliably reported for n<7. This paper reports clear G{cyrillic}-G{cyrillic} photoluminescence and its decay for n=1,2,3 and 4 (GaAs)_n-(AlAs)_n superlattices, and compares the positrons to theory as well as to measurements on the G{cyrillic}-G{cyrillic} transition by other techniques.

Original language	English (US)
Pages (from-to)	133-136
Number of pages	4
Journal	Journal of Luminescence
Volume	50
Issue number	2
DOIs	https://doi.org/10.1016/0022-2313(91)90028-T
State	Published - 1991
Externally published	Yes

All Science Journal Classification (ASJC) codes

Biophysics
Atomic and Molecular Physics, and Optics
General Chemistry
Biochemistry
Condensed Matter Physics

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10.1016/0022-2313(91)90028-T

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@article{098ad44f510a458aacdfb319411fbc24,

title = "G\{cyrillic\}-G\{cyrillic\} photoluminescence from type II short-period GaAs-AlAs superlattices",

abstract = "Type II short-period (GaAs)n-(AlAs)n superlattices have an indirect band gap with the X conduction band minimum in the AlAs layer and the G\{cyrillic\} valence band maximum in the GaAs layer. The transfer rate of excited electrons from G\{cyrillic\} to X is high compared to the direct G\{cyrillic\}-G\{cyrillic\} recombination rate, so the indirect X-G\{cyrillic\} transition predominates in the photoluminescence spectra. The G\{cyrillic\}-G\{cyrillic\} photoluminescence is very weak and has not been reliably reported for n<7. This paper reports clear G\{cyrillic\}-G\{cyrillic\} photoluminescence and its decay for n=1,2,3 and 4 (GaAs)n-(AlAs)n superlattices, and compares the positrons to theory as well as to measurements on the G\{cyrillic\}-G\{cyrillic\} transition by other techniques.",

author = "Weikun Ge and Mackay, \{Janet L.\} and Pfeiffer, \{L. N.\} and West, \{K. W.\}",

year = "1991",

doi = "10.1016/0022-2313(91)90028-T",

language = "English (US)",

volume = "50",

pages = "133--136",

journal = "Journal of Luminescence",

issn = "0022-2313",

publisher = "Elsevier B.V.",

number = "2",

}

TY - JOUR

T1 - G{cyrillic}-G{cyrillic} photoluminescence from type II short-period GaAs-AlAs superlattices

AU - Ge, Weikun

AU - Mackay, Janet L.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 1991

Y1 - 1991

N2 - Type II short-period (GaAs)n-(AlAs)n superlattices have an indirect band gap with the X conduction band minimum in the AlAs layer and the G{cyrillic} valence band maximum in the GaAs layer. The transfer rate of excited electrons from G{cyrillic} to X is high compared to the direct G{cyrillic}-G{cyrillic} recombination rate, so the indirect X-G{cyrillic} transition predominates in the photoluminescence spectra. The G{cyrillic}-G{cyrillic} photoluminescence is very weak and has not been reliably reported for n<7. This paper reports clear G{cyrillic}-G{cyrillic} photoluminescence and its decay for n=1,2,3 and 4 (GaAs)n-(AlAs)n superlattices, and compares the positrons to theory as well as to measurements on the G{cyrillic}-G{cyrillic} transition by other techniques.

AB - Type II short-period (GaAs)n-(AlAs)n superlattices have an indirect band gap with the X conduction band minimum in the AlAs layer and the G{cyrillic} valence band maximum in the GaAs layer. The transfer rate of excited electrons from G{cyrillic} to X is high compared to the direct G{cyrillic}-G{cyrillic} recombination rate, so the indirect X-G{cyrillic} transition predominates in the photoluminescence spectra. The G{cyrillic}-G{cyrillic} photoluminescence is very weak and has not been reliably reported for n<7. This paper reports clear G{cyrillic}-G{cyrillic} photoluminescence and its decay for n=1,2,3 and 4 (GaAs)n-(AlAs)n superlattices, and compares the positrons to theory as well as to measurements on the G{cyrillic}-G{cyrillic} transition by other techniques.

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U2 - 10.1016/0022-2313(91)90028-T

DO - 10.1016/0022-2313(91)90028-T

M3 - Article

AN - SCOPUS:0026189899

SN - 0022-2313

VL - 50

SP - 133

EP - 136

JO - Journal of Luminescence

JF - Journal of Luminescence

IS - 2

ER -

G{cyrillic}-G{cyrillic} photoluminescence from type II short-period GaAs-AlAs superlattices

Abstract

All Science Journal Classification (ASJC) codes

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