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Proceedings Paper

Characterization of crosstalk in HgCdTe n-on-p photovoltaic infrared arrays
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Paper Abstract

In this paper, a theoretical and experimental study is carried out of crosstalk between neighboring devices within a back-side illuminated two dimensional HgCdTe photovoltaic infrared sensing array. Theoretical calculations are performed utilizing Dhar's model, a 2D simulated current approximation to crosstalk. Experimental results stem from spatial photo-response (SPR) measurements, which have been performed on HgCdTe MWIR photodiode arrays. The characterized devices are part of an 8x8 array fabricated using LPE grown p-type HgCdTe, with photodiodes fabricated in-house at The University of Western Australia. A scanning laser microscope is used to measure the spatial photo-response as a function of temperature. The theoretical model uses finite analysis techniques of probabilistic equations describing photogenerated carrier diffusion within the array. The Dhar model is a two dimensional model of simulated currents generated within the array. The basis of this model is the Kammins Fong (KF) model, a simplistic one dimensional representation of similar simulated currents. Inclusion of diffusion characteristics in the Dhar model is shown to result in greater levels of accuracy.

Paper Details

Date Published: 30 March 2004
PDF: 11 pages
Proc. SPIE 5274, Microelectronics: Design, Technology, and Packaging, (30 March 2004); doi: 10.1117/12.522217
Show Author Affiliations
L. Karp, Univ. of Western Australia (Australia)
Charles A. Musca, Univ. of Western Australia (Australia)
John M. Dell, Univ. of Western Australia (Australia)
Lorenzo Faraone, Univ. of Western Australia (Australia)

Published in SPIE Proceedings Vol. 5274:
Microelectronics: Design, Technology, and Packaging
Derek Abbott; Kamran Eshraghian; Charles A. Musca; Dimitris Pavlidis; Neil Weste, Editor(s)

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