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Proceedings Paper

Noise performance analysis of MWIR InAs/GaSb superlattice pin photodiodes
Author(s): Isabelle Ribet-Mohamed; Katarzyna Jaworowicz; David Tayibi; Cyril Cervera; Rachid Taalat; Jean-Baptiste Rodriguez; Philippe Christol
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Paper Abstract

We report the full electrooptical characterization of a MWIR InAs/GaSb superlattice (SL) pin photodiode, including dark current, noise, spectral response and quantum efficiency measurements. The SL structure was made of 8 InAs monolayers (MLs) and 8 GaSb MLs, with a total thickness of 3μm. It exhibits a cut-off wavelength of 4.55 μm at 77K. Dark current measurements reveal a diffusion-limited behavior for temperatures higher than 95K, and a R0A value of 1x106Ωcm2 at 77K. Noise measurements were performed under dark conditions and are interpreted in this paper. The results show that the SL detector remains Schottky noise-limited up to a bias voltage of -600mV and that 1/f noise is not present above 6Hz. Spectral response revealed that the cut-off wavelength increases from 4.48μm to 4.91μm when the temperature increases from 12K to 170K. The quantum efficiency in photovoltaic mode and at 77K is 25% (3μm-thick active zone device, single pass and without any antireflection coating). All these electrooptical performances confirm the high quality of the MWIR SL pin photodiode under test.

Paper Details

Date Published: 20 May 2011
PDF: 12 pages
Proc. SPIE 8012, Infrared Technology and Applications XXXVII, 80120Z (20 May 2011); doi: 10.1117/12.883794
Show Author Affiliations
Isabelle Ribet-Mohamed, ONERA (France)
Katarzyna Jaworowicz, ONERA (France)
David Tayibi, ONERA (France)
Cyril Cervera, Institut d'Electronique du Sud, CNRS, Univ. Montpellier 2 (France)
Rachid Taalat, Institut d'Electronique du Sud, CNRS, Univ. Montpellier 2 (France)
Jean-Baptiste Rodriguez, Institut d'Electronique du Sud, CNRS, Univ. Montpellier 2 (France)
Philippe Christol, Institut d'Electronique du Sud, CNRS, Univ. Montpellier 2 (France)

Published in SPIE Proceedings Vol. 8012:
Infrared Technology and Applications XXXVII
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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