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Proceedings Paper

Hg3In2Te6: a promising material for optoelectronic devices
Author(s): Peter Gorley; Zinaida Grushka; Yarema Radevych; Olena Grushka; Ivan Zabolotsky
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Paper Abstract

This paper is dedicated to the investigation of stoichiometric defect semiconductors, allowing extremely high vacancy concentrations of 1021 cm-3, determining their unusual physical properties. The material studied, Hg3In2Te6, is of high interest for creation of efficient photonic structures: self-calibrating photodiodes, high-speed photodiodes, multi-element photodiodes with improved sensitivity, as well as optical filters for the spectral ranges of 2-28μm. Measurements of photoconductivity confirmed high sensitivity of this material in wide spectral ranges (λ=0.35-1.85 μm), including the areas of sensitivity for CdS, CdSe, GaAs, Si and Ge. In comparison with the latter, Hg3In2Te6 is characterized with the lowest melting temperature (983K) that allows reduction of energy consumption during the synthesis process. The experimental results prove high photoconductive quantum yield for Hg3In2Te6 at hν = 0.74 - 3.5 eV. For the sake of comparison, we are also presenting the investigation results concerning CdIn2Te4 crystals. In general, defect semiconductors are ideal for creation of surface-barrier structures and hetero-junctions because of low surface state concentration and atmospheric oxygen absorption rate.

Paper Details

Date Published: 30 October 2007
PDF: 10 pages
Proc. SPIE 6796, Photonics North 2007, 67961W (30 October 2007); doi: 10.1117/12.778954
Show Author Affiliations
Peter Gorley, Yuri Fedkovych Chernivtsi National Univ. (Ukraine)
Zinaida Grushka, Yuri Fedkovych Chernivtsi National Univ. (Ukraine)
Yarema Radevych, Yuri Fedkovych Chernivtsi National Univ. (Ukraine)
Olena Grushka, Yuri Fedkovych Chernivtsi National Univ. (Ukraine)
Ivan Zabolotsky, Yuri Fedkovych Chernivtsi National Univ. (Ukraine)

Published in SPIE Proceedings Vol. 6796:
Photonics North 2007
John Armitage, Editor(s)

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