Accession Number : ADA260136
Title : Advances in Multiple Quantum Well IR Detectors
Descriptive Note : Technical rept.
Corporate Author : AEROSPACE CORP EL SEGUNDO CA ENGINEERING AND TECHNOLOGY GROUP
Personal Author(s) : Bloss, W ; O'Loughlin, M ; Rosenbluth, M
Report Date : Oct 1992
Pagination or Media Count : 14
Abstract : The performance of GaAs/AlGaAs multiple quantum well long-wavelength infrared detectors is evaluated for potential applications in focal plane arrays. A number of GaAs/AlGaAs quantum well infrared detectors with absorption between 7 to 12 um have been fabricated and characterized. In these samples, the quantum well width and barrier height were held approximately constant, while the AlGaAs barrier thickness was varied from 300 to 500 A. these detectors were characterized by FTIR absorption, dark current, responsivity, spectral noise density, and thermal activation energy measurements at temperatures ranging from 6 to 80 K. A maximum detectivity of 4 x 1013 cm/Hz/W at 6 K is obtained at A-8.4 um for the 500 A barrier sample.
Descriptors : *QUANTUM WELLS , *INFRARED DETECTORS , ALUMINUM GALLIUM ARSENIDES , ALUMINUM ARSENIDES , INFRARED PHOTOCONDUCTORS
Subject Categories : Electrical and Electronic Equipment
Infrared Detection and Detectors
Distribution Statement : APPROVED FOR PUBLIC RELEASE