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Proceedings Paper

Currents in Hg1-xCdxTe photodiodes
Author(s): Joanna V. Gumenjuk-Sichevskaya; Fiodor F. Sizov
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Paper Abstract

Carrier transport mechanisms in Hg1-xCdxTe photodiodes in the temperature range 70 divided by 150 K are discussed. Two major current mechanisms were included into balance equations of the p-n-junction: trap-assisted tunneling (TAT) and Schockley-Reed-Hall generation- recombination processes. For TAT Anderson's matrix element of the impurity ionization was used and the tunneling rate characteristics were calculated in the k-p approximation with the constant barrier field.Other current mechanism were included in consideration as additive contributions. Using donor and acceptor concentrations, trap level concentration, trap level energy, and in-junction trap level lifetimes as fitting parameters, we obtain a relatively good agreement with experimental data.

Paper Details

Date Published: 4 November 1999
PDF: 6 pages
Proc. SPIE 3890, Fourth International Conference on Material Science and Material Properties for Infrared Optoelectronics, (4 November 1999); doi: 10.1117/12.368344
Show Author Affiliations
Joanna V. Gumenjuk-Sichevskaya, Institute of Semiconductor Physics (Ukraine)
Fiodor F. Sizov, Institute of Semiconductor Physics (Ukraine)


Published in SPIE Proceedings Vol. 3890:
Fourth International Conference on Material Science and Material Properties for Infrared Optoelectronics
Fiodor F. Sizov, Editor(s)

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