Separate electron-hole confinement in composite InAsyP1-y/GaxIn1-xAs quantum wells

A. Yu. Silov; Balakrishnan Nair Aneeshkumar; M. R. Leys; N. S. Averkiev; P. C. M. Christianen; Joachim H. Wolter

doi:10.1117/12.513817

11 June 2003 Separate electron-hole confinement in composite InAs_yP_1-y/Ga_xIn_1-xAs quantum wells

A. Yu. Silov, Balakrishnan Nair Aneeshkumar, M. R. Leys, N. S. Averkiev, P. C. M. Christianen, Joachim H. Wolter

Proceedings Volume 5023, 10th International Symposium on Nanostructures: Physics and Technology; (2003) https://doi.org/10.1117/12.513817
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

Abstract

Composite double qunatum wells made from materials with a type-II band line-up have been grown to realize separate confinement in real space for electrons and holes. We have observed a substantial blue shift of the lowest energy transition in such composite double quantum wells. The photocurrent measurements demonstrate a linear Stark shift due to the separate confinement in real space for electrons and holes. The charge separation is up to 45 Å in the strain balanced InAs_0.42P_0.58/Ga_0.67In_0.33As samples. The experimental results agree very well with calculations in the framework of Bir-Pikus strain Hamiltonian.

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A. Yu. Silov, Balakrishnan Nair Aneeshkumar, M. R. Leys, N. S. Averkiev, P. C. M. Christianen, and Joachim H. Wolter "Separate electron-hole confinement in composite InAs_yP_1-y/Ga_xIn_1-xAs quantum wells", Proc. SPIE 5023, 10th International Symposium on Nanostructures: Physics and Technology, (11 June 2003); https://doi.org/10.1117/12.513817

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