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Asymmetric dark current in double-barrier quantum well infrared photodetectors

Zhuang, Qiandong and Li, Jinmin and Lin, Lanying (1998) Asymmetric dark current in double-barrier quantum well infrared photodetectors. Proceedings of the Society of Photo-Optical Instrumentation Engineers, 3437. pp. 391-395. ISSN 0361-0748

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Abstract

Asymmetric dark current and photocurrent versus voltage characteristic in the Double Barrier Quantum Wells (DBQWs) photovoltaic infrared photodetector has been studied. A model based on asymmetric potential barriers was proposed. The asymmetric potential thick barrier, which due to the Si dopant segregation during growth makes a major contribution to the asymmetrical I-V characteristic, calculations based on our model agree well with experimental results. This work also confirms the potential use of this DBQWs for infrared photodetector with large responsivity and little dark current under negative bias.

Item Type: Article
Journal or Publication Title: Proceedings of the Society of Photo-Optical Instrumentation Engineers
Subjects:
Departments: Faculty of Science and Technology > Physics
ID Code: 51597
Deposited By: ep_importer_pure
Deposited On: 23 Nov 2011 14:55
Refereed?: Yes
Published?: Published
Last Modified: 09 Apr 2014 22:53
Identification Number:
URI: http://eprints.lancs.ac.uk/id/eprint/51597

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