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Proceedings Paper

Electronic structure of quantum dots in (111) direction
Author(s): Wei Zhao; Zhongyuan Yu; Yumin Liu
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Paper Abstract

Electronic structures of InAs/GaAs cubic and truncated pyramidal quantum dots grown in (111) direction are showed in this paper. Continuum elastic theory is used to determine the strain distributions. Electronic energy levels are calculated by solving a three-dimensional effective mass Shrödinger equation including a strain modified confinement potential and piezoelectric effects. The influence of polarization effect to conduction band of quantum dot is discussed. It is found that polarization distribution is dependent on the shape of quantum dot.

Paper Details

Date Published: 3 December 2009
PDF: 6 pages
Proc. SPIE 7631, Optoelectronic Materials and Devices IV, 76311Y (3 December 2009); doi: 10.1117/12.851772
Show Author Affiliations
Wei Zhao, Beijing Univ. of Posts and Telecommunications (China)
Zhongyuan Yu, Beijing Univ. of Posts and Telecommunications (China)
Yumin Liu, Beijing Univ. of Posts and Telecommunications (China)


Published in SPIE Proceedings Vol. 7631:
Optoelectronic Materials and Devices IV

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