Carrier confinement photoconductive detector

Jalali, B.; Evans, H. L.; Yang, E. S.
April 1988
Applied Physics Letters;4/18/1988, Vol. 52 Issue 16, p1323
Academic Journal
We propose a new device, the carrier confinement photoconductive detector, in which an improvement in performance over a conventional photoconductor is achieved by confinement of photogenerated carriers in the active channel. The confinement can be realized by placing a layer of a wide band-gap semiconductor between the channel and ohmic contact. Analytical and numerical analyses show that gain-bandwidth improvement of 100% can be achieved by using the GaAl/AlGaAs system.


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