Far-infrared detection with Hg1-xCdxTe

M. F. Kimmitt, G. C. Lopez, J. C. Giles, M. Takai, H. P. Röser, B T McGuckin, A. Black

    Research output: Contribution to journalArticle

    Abstract

    We report detection in liquid He cooled n-Hg1-xCdxCdxTe at wavelengths between 140 and 1200 µm. With the mole fraction, x, of Cd <0.4m the alloy behaves as an electron bolometer with similar detectivity, but much improved bandwidth, compared with n-InSb. With x > 0.48 the detection process is extrinsic photoconductivity with an energy gap of a few meV. Lattice absorption severely limits detection in the wavelength range 220-340 µm. © 1985.

    Original languageEnglish
    Pages (from-to)767-778
    Number of pages12
    JournalInfrared Physics
    Volume25
    Issue number6
    DOIs
    Publication statusPublished - Nov 1985

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    Kimmitt, M. F., Lopez, G. C., Giles, J. C., Takai, M., Röser, H. P., McGuckin, B. T., & Black, A. (1985). Far-infrared detection with Hg1-xCdxTe. Infrared Physics, 25(6), 767-778. https://doi.org/10.1016/0020-0891(85)90045-4