Title

Photocurrent induced by intersubband transition in a type II and broken-gap quantum well system

RIS ID

19102

Publication Details

Wei, X. F., Xu, W., Zeng, Z. & Zhang, C. (2007). Photocurrent induced by intersubband transition in a type II and broken-gap quantum well system. Physica Status Solidi. Rapid Research Letters, 4 (2), 544-546.

Abstract

We demonstrate theoretically that when an InAs/GaSb based type II and broken-gap quantum well is subjectedto a light field, conductance can be observed along the growth direction due to charge transfer betweenelectron and hole layers. A sharp peak can be observed in conductance within sub-THz bandwidth. The peakshifts to the lower frequency (red-shift) with increasing temperature. Our results indicate that InAs/GaSbbased quantum well systems are of potential to be applied as sub-THz photovoltaic devices.

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Link to publisher version (DOI)

http://dx.doi.org/10.1002/pssc.200673347