Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2014, Vol. 25 ›› Issue (1): 010201 doi: 10.13538/j.1001-8042/nst.25.010201

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Temperature and Carrier-density dependent excitonic absorption spectra of semiconductor quantum wires

WANG Ting-Dong, HUAI Ping   

  1. 1Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
    2University of Chinese Academy of Sciences, Beijing 100049, China
    3Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China
  • Contact: HUAI Ping E-mail:huaiping@sinap.ac.cn
  • Supported by:

    Supported by the National Basic Research Program of China (No. 2010CB934504) and the National Natural Science Foundation of China (No. 10874197)

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WANG Ting-Dong, HUAI Ping . Temperature and Carrier-density dependent excitonic absorption spectra of semiconductor quantum wires.Nuclear Science and Techniques, 2014, 25(1): 010201     doi: 10.13538/j.1001-8042/nst.25.010201

Abstract:

In this paper, we present a theoretical study on excitonic absorption spectra of one-dimensional semiconductor quantum wires. The carrier-carrier scattering is treated by the second Born approximation in the Markovian limit. The absorption spectra of different carrier densities and temperatures are discussed. The excitonic absorption peak position and width show complicated dependence on carrier density and temperature, indicating the importance of carrier-carrier scattering. The behavior can be understood by the cooperative effects of exchange self-energy and Coulomb correlation due to carrier-carrier scattering.

Key words: Semiconductor quantum wire, Exciton, Absorption, Carrier-carrier scattering