Simulation of Photocurrents of Terahertz Quantum-Well Photodetectors
State Key Laboratory of Functional Materials for Informatics, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai 200050
Received Date:
January 27, 2008
Published Date:
April 30, 2008
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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References
[1]
Levine B F, Choi K K, Bethea C G and Walker J 1987 Appl. Phys. Lett. 50 1092
[2]
Levine B F, .Malik R J, Walker J, Choi K K, .Bethea C G,Kleinman D A and Vanderberg J M 1987 Appl. Phys. Lett. 50 273
[3]
Liu H C and Capasso F 2000 Intersubband Transition inQuantum Wells: Physics and Device Applications I (San Diego:Academic) chap 3
[4]
Cao J C 2003 Phys. Rev. Lett. 91 237401
[5]
Liu H C, Song C Y, SpringThorpe A J and Cao J C 2004 Appl. Phys. Lett. 84 4068
[6]
Graf M, Scalari G, Hofstetter D, Faist J, Beere H,Linfield E, Ritchie D and Davies G 2004 Appl. Phys. Lett. 84 475
[7]
Luo H, Liu H C, Song C Y, Wasilewski Z R 2005 Appl.Phys. Lett. 86 231103
[8]
Liu H C, Luo H, Song C Y, Wasilewski Z R, SpringThorpe A Jand Cao J C 2007 Infrared Phys. Technol. 50 191
[9]
Barbieri S, Beltram F and Rossi F 1999 Phys. Rev. B 60 1953
[10]
Liu H C and Capasso F 2000 Intersubband Transitionsin Quantum Wells: Physics and Device Applications I (San Diego:Academic) chap 1
[11]
Fu Y, Willander M, Jiang J, Li N, Lu W and Liu H C 2003 J. Appl. Phys. 93 9432
[12]
Ridley B K 1988 Quantum Processes in Semiconductors(Oxford: Clarendon)
[13]
Cao J C, Chen Y L and.Liu HC 2006 Superlattices andMicrostructures 40 119
[14]
Liu H C, Song C Y, Wasilewski Z R, Gupta J A and BuchananM 2007 Appl. Phys. Lett. 91 131121
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About This Article
Cite this article:
XIONG Feng, GUO Xu-Guang, CAO Jun-Cheng. Simulation of Photocurrents of Terahertz Quantum-Well Photodetectors[J]. Chin. Phys. Lett. , 2008, 25(5): 1895-1897.
XIONG Feng, GUO Xu-Guang, CAO Jun-Cheng. Simulation of Photocurrents of Terahertz Quantum-Well Photodetectors[J]. Chin. Phys. Lett. , 2008, 25(5): 1895-1897.