Zero-dimensional excitonic confinement in locally strainedZn1−xCdxSequantum wells
作者:
V. Nikitin,
P. A. Crowell,
J. A. Gupta,
D. D. Awschalom,
F. Flack,
N. Samarth,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 71,
issue 9
页码: 1213-1215
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.119854
出版商: AIP
数据来源: AIP
摘要:
We report on the observation of zero-dimensional (0D) excitonic confinement in locally strainedZn1−xCdxSequantum wells. Strain fields from self-organized CdSe quantum dots are used to locally modulate the band structure of a nearby quantum well in a heterostructure, resulting in confinement in all three dimensions. The 0D nature of excitonic confinement is verified by the observation of sharp lines in photoluminescence (PL) spectra. The temperature dependence of the PL lifetime is markedly different than that of the CdSe quantum dots. High-resolution spectra show that the PL lines from the localized states are split into linearly polarized doublets. ©1997 American Institute of Physics.
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