Broadband asymmetric quantum-well infrared photodetector in long-wavelength infrared range (LWIR)
Abstract
A theoretical investigation of a GaAs-AlGaAs infrared detector consisting of three asymmetric quantum wells is presented. Each quantum well is sensitive to yield absorption and a photoresponse at peak wavelengths of 8 pro, 9.5 mu m and 10.8 mu m respectively. Device operation is based on inter-subband bound-to-bound transition. Asymmetry in the quantum welts is shown to give broad band responsivity spectrum at an operating bias.
Source
2007 JOINT 32ND INTERNATIONAL CONFERENCE ON INFRARED AND MILLIMETER WAVES AND 15TH INTERNATIONAL CONFERENCE ON TERAHERTZ ELECTRONICS, VOLS 1 AND 2Collections
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