The impurity states in different shaped quantum wells under applied electric field

Author:

Hu Min1ORCID,Wang Hailong1,Gong Qian2

Affiliation:

1. Shandong Provincial Key Laboratory, of Laser Polarization and Information Technology, Department of Physics, Qufu Normal University, Qufu 273165, P. R. China

2. State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050, P. R. China

Abstract

In this paper, the impurity states in square, parabolic and V-shaped quantum wells (QWs) are calculated by the plane wave method under the theoretical framework of effective mass envelope function approximation. In different shaped QWs, the impurity binding energies in 1s-like state and 2p-like state have the same trend with the increase of QW width. However, the transition energies of impurity states between 1s-like state and 2p-like state in three shaped QWs are different. When the width of QW is fixed, the transition energy in square QW is the minimum and that in V-shaped QW is the maximum. The effect of electric field is larger for the on-center donor impurity. The effect of electric field on the impurity states is the largest in square QW and the smallest in V-shaped QW.

Funder

National Natural Science Foundation of China

Shandong Province Natural Science Foundation

Publisher

World Scientific Pub Co Pte Lt

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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