Graduate Thesis Or Dissertation
 

A study of the photoresponse of semi-insulating gallium arsenide

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https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/pr76f609q

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  • The photoresponse behavior of semi-insulating GaAs is investigated. The photocarrier lifetime is discussed and the influence of surface and contact recombination is taken into account. Photocurrent-voltage characteristics have been measured and a mechanism for the gain in terms of space charge amplification and avalanching is suggested. The influence of deep level traps on the photoresponse of semi-insulating GaAs is investigated. Furthermore, the photocurrent-temperature dependence is studied and a strong increase of photocurrent below 160 K is reported.
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