Photovoltaic operation up to 270 K of a strain-compensated AlAs/In 0.84 Ga 0.16As/AlAs/InAlAs quantum well infrared photodetector

K. T. Lai, S. K. Haywood, A. H. Mohamed, M. Missous, R. Gupta

    Research output: Contribution to journalArticlepeer-review

    Abstract

    We report operation up to 270 K of a strain-compensated AlAs In0.84 Ga0.16 AsAlAs In0.52 Al0.48 As double barrier quantum well infrared photodetector, grown on an InP substrate. The n=1 to n=2 intersubband transition gives a peak detection wavelength of 2.09 μm at 77 K which is in good agreement with the calculated value for a 3 nm quantum well. The conduction band discontinuity between In0.52 Al0.48 As and In0.84 Ga0.16 As is calculated to be 0.675 eV, which offers the possibility of room temperature operation for optimized detectors. © 2005 American Institute of Physics.
    Original languageEnglish
    Article number192113
    Pages (from-to)1-3
    Number of pages2
    JournalApplied Physics Letters
    Volume87
    Issue number19
    DOIs
    Publication statusPublished - 7 Nov 2005

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