Simulation of Photocurrents of Terahertz Quantum-Well Photodetectors
XIONG Feng, GUO Xu-Guang, CAO Jun-Cheng
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
Simulation of Photocurrents of Terahertz Quantum-Well Photodetectors
XIONG Feng;GUO Xu-Guang;CAO Jun-Cheng
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
摘要We theoretically simulate the influence of the scattering processes of the electrons in the continuum states on the shapes of the photocurrent spectra of THz quantum well photodetectors. The width of the photocurrent peak should be wider according to the uncertainty relation when these scattering processes lead to shorter relaxation time. We take a simple approximation model to include this influence and calculate the photocurrent spectra, which are in agreement with experimental results qualitatively.
Abstract：We theoretically simulate the influence of the scattering processes of the electrons in the continuum states on the shapes of the photocurrent spectra of THz quantum well photodetectors. The width of the photocurrent peak should be wider according to the uncertainty relation when these scattering processes lead to shorter relaxation time. We take a simple approximation model to include this influence and calculate the photocurrent spectra, which are in agreement with experimental results qualitatively.
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2008, Vol. 25 
