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Proceedings Paper

Very long wavelength type-II InAs/GaSb superlattice infrared detectors
Author(s): L. Höglund; J. B. Rodriguez; S. Naureen; R. Ivanov; C. Asplund; R. Marcks von Würtemberg; R. Rossignol; P. Christol; A. Rouvié; J. Brocal; O. Saint-Pé; E. Costard
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Paper Abstract

In this paper, results from the development of LWIR and VLWIR InAs/GaSb type-II infrared photodetector arrays are presented. Dark currents comparable to the HgCdTe benchmark (Rule07) have been observed and the quantum efficiencies of the detectors exceed 30 %. Bias and temperature dependencies of the QE have been studied showing very low turn on bias (~-25mV) and no variation of the peak QE value with temperature. These results show that there are no unintentional barriers in the detector structures and that the diffusion lengths are long enough to provide efficient collection of carriers. Initial results from the extension of the cut-off wavelength from 11 μm to 14 μm are also presented as well as initial results from photodiodes with thicker absorbers to enhance the QE.

Paper Details

Date Published: 23 May 2018
PDF: 7 pages
Proc. SPIE 10624, Infrared Technology and Applications XLIV, 106240I (23 May 2018); doi: 10.1117/12.2292977
Show Author Affiliations
L. Höglund, IRnova AB (Sweden)
J. B. Rodriguez, Institut d'Électronique et des Systèmes, Univ. Montpellier, CNRS (France)
S. Naureen, IRnova AB (Sweden)
R. Ivanov, IRnova AB (Sweden)
C. Asplund, IRnova AB (Sweden)
R. Marcks von Würtemberg, IRnova AB (Sweden)
R. Rossignol, Institut d'Électronique et des Systèmes, Univ. Montpellier, CNRS (France)
P. Christol, Institut d'Électronique et des Systèmes, Univ. Montpellier, CNRS (France)
A. Rouvié, Airbus Defence and Space (France)
J. Brocal, Airbus Defence and Space (France)
O. Saint-Pé, Airbus Defence and Space (France)
E. Costard, IRnova AB (Sweden)

Published in SPIE Proceedings Vol. 10624:
Infrared Technology and Applications XLIV
Bjørn F. Andresen; Gabor F. Fulop; Charles M. Hanson; John Lester Miller; Paul R. Norton, Editor(s)

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