Published July 1986
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Journal Article
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Infrared absorption measurement and analysis of HgTe–CdTe superlattices
Chicago
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Abstract
The near-band-gap optical properties of superlattice are essential in determining the usefulness of these structures for application in infrared systems. In this paper we report on studies of a HgTe–CdTe superlattice. The optical characterization of the superlattice in the infrared was carried out by measuring its photoluminescence, transmission, and photoconductivity spectra. Results of these measurements as functions of temperature are presented, as are the theoretically calculated absorption spectra. We obtained good agreement between different measurement techniques and the theoretical model for the optical absorption and band gap.
Additional Information
© 1986 American Vacuum Society. (Received 15 December 1985; accepted 10 March 1986) The authors would like to acknowledge the contributions of a number of people who helped significantly in this effort. J. Reno at the University of Illinois-Chicago Circle gre the sample. T. N. Casselman of the Santa Barbara Research Center played a key role in facilitating the experiment. Technical discussions with D. L. Smith of Los Alamos Scientific Laboratories and R. Baron and J. N. Schulman of Hughes Research Laboratories have been important in guiding our studies. One of us (J.P.F.) gratefully acknowledges the support of DARPA under Contract No. MDA 903-83-K-025. The work at Caltech was supported in part by the ARO under Contract No. DAAG-29-83-K-0104.Files
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