Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/99690
Title: Widely tunable intersubband energy spacing of self-assembled InAs/GaAs quantum dots due to interface intermixing
Authors: Wang, X. C.
Xu, S. J.
Chua, S. J.
Zhang, Zi-Hui
Fan, Weijun
Wang, C. H.
Jiang, J.
Xie, X. G.
Keywords: DRNTU::Engineering::Electrical and electronic engineering
Issue Date: 1999
Source: Wang, X. C., Xu, S. J., Chua, S. J., Zhang, Z.-H., Fan, W., Wang, C. H., Jiang, J., & Xie, X. G. (1999). Widely tunable intersubband energy spacing of self-assembled InAs/GaAs quantum dots due to interface intermixing. Journal of applied physics, 86(5), 2687.
Series/Report no.: Journal of applied physics
Abstract: In this article, we showed the significant reduction of the energy spacing between ground state and excited state emissions from InAs/GaAs quantum dots(QDs) due to interface interdiffusion induced by thermal treatment. In addition, the strong narrowing of the luminescencelinewidth of the ground state and excited state emissions from the InAs dot layers for the annealed samples indicates an improvement of the size distribution of the QDs. Large blueshift of the energy positions of both emissions was also observed. High resolution x-ray diffraction experiments give strong evidence of the interface atom interdiffusion in the annealed samples. This work shows the ability to tune the wavelength for applications like infrared detectors and lasers based on intrasubband transitions of self-assembledQDs.
URI: https://hdl.handle.net/10356/99690
http://hdl.handle.net/10220/18011
ISSN: 0021-8979
DOI: 10.1063/1.371111
Rights: © 1999 American Institute of Physics. This paper was published in Journal of Applied Physics and is made available as an electronic reprint (preprint) with permission of American Institute of Physics. The paper can be found at the following official DOI: [http://dx.doi.org/10.1063/1.371111].  One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law.
Fulltext Permission: open
Fulltext Availability: With Fulltext
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