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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 |
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| Cite this article: |
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XIONG Feng, GUO Xu-Guang, CAO Jun-Cheng 2008 Chin. Phys. Lett. 25 1895-1897 |
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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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| Keywords:
78.67.De
71.20.Rv
42.79.Pw
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Received: 28 January 2008
Published: 29 April 2008
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