Indirect and direct optical transitions in In0.5Ga0.5As/GaP quantum dots
Indirect and direct optical transitions in In0.5Ga0.5As/GaP quantum dots
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In0 5Ga0 5As/GaP 量子点中的间接和直接光学跃迁
DOI:
10.1063/1.4870087
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发表时间:
2014
影响因子:
4
通讯作者:
D. Bimberg
中科院分区:
文献类型:
--
作者:
G. Stracke;E. M. Sala;S. Selve;T. Niermann;A. Schliwa;A. Strittmatter;D. Bimberg
We present a study of self-assembled In{sub 0.5}Ga{sub 0.5}As quantum dots on GaP(001) surfaces linking growth parameters with structural, optical, and electronic properties. Quantum dot densities from 5.0 × 10{sup 7} cm{sup −2} to 1.5 × 10{sup 11} cm{sup −2} are achieved. A ripening process during a growth interruption after In{sub 0.5}Ga{sub 0.5}As deposition is used to vary the quantum dot size. The main focus of this work lies on the nature of optical transitions which can be switched from low-efficient indirect to high-efficient direct ones through improved strain relief of the quantum dots by different cap layers.
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影响因子:
4
作者:
A. Lenz;R. Timm;H. Eisele;C. Hennig;S. K. Becker;R. Sellin;U. W. Pohl;D. Bimberg;M. Dähne
通讯作者:
M. Dähne
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
C. Robert;M. Nestoklon;K. P. D. Silva;L. Pédesseau;C. Cornet;M. Alonso;A. Goñi;P. Turban;J. Jancu;J. Even;O. Durand
通讯作者:
O. Durand
DOI:
--
发表时间:
1999
期刊:
影响因子:
--
作者:
A. Williamson;A. Franceschetti;H. Fu;L. Wang;A. Zunger
通讯作者:
A. Zunger
影响因子:
4
作者:
Grassman, T. J.;Carlin, J. A.;Ringel, S. A.
通讯作者:
Ringel, S. A.
DOI:
10.1016/j.physe.2003.02.001
发表时间:
2004-02-01
影响因子:
3.3
作者:
Fuchi, S;Nonogaki, Y;Takeda, Y
通讯作者:
Takeda, Y