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Proceedings Paper

Development of low dark current SiGe-detector arrays for visible-NIR imaging sensor
Author(s): Ashok K. Sood; Robert A. Richwine; Yash R. Puri; Nicole DiLello; Judy L. Hoyt; Tayo I. Akinwande; Stuart Horn; Ray S. Balcerak; Gary Bulman; Rama Venkatasubramanian; Arvind I. D'Souza; Thomas G. Bramhall
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Paper Abstract

SiGe based Focal Plane Arrays offer a low cost alternative for developing visible- NIR focal plane arrays that will cover the spectral band from 0.4 to 1.6 microns. The attractive features of SiGe based IRFPA's will take advantage of Silicon based technology, that promises small feature size, low dark current and compatibility with the low power silicon CMOS circuits for signal processing. This paper discusses performance comparison for the SiGe based VIS-NIR Sensor with performance characteristics of InGaAs, InSb, and HgCdTe based IRFPA's. Various approaches including device designs are discussed for reducing the dark current in SiGe detector arrays; these include Superlattice, Quantum dot and Buried junction designs that have the potential of reducing the dark current by several orders of magnitude. The paper also discusses approaches to reduce the leakage current for small detector size and fabrication techniques. In addition several innovative approaches that have the potential of increasing the spectral response to 1.8 microns and beyond.

Paper Details

Date Published: 6 May 2009
PDF: 11 pages
Proc. SPIE 7298, Infrared Technology and Applications XXXV, 72983D (6 May 2009); doi: 10.1117/12.820896
Show Author Affiliations
Ashok K. Sood, Magnolia Optical Technologies, Inc. (United States)
Robert A. Richwine, Magnolia Optical Technologies, Inc. (United States)
Yash R. Puri, Magnolia Optical Technologies, Inc. (United States)
Nicole DiLello, Microsystems Technology Laboratories, MIT (United States)
Judy L. Hoyt, Microsystems Technology Laboratories, MIT (United States)
Tayo I. Akinwande, Microsystems Technology Laboratories, MIT (United States)
Stuart Horn, Defense Advanced Research Projects Agency (United States)
Ray S. Balcerak, Ray M. Balcerak, LLC (United States)
Gary Bulman, RTI International (United States)
Rama Venkatasubramanian, RTI International (United States)
Arvind I. D'Souza, DRS Sensors & Targeting Systems, Inc. (United States)
Thomas G. Bramhall, DARPA Program Office, U.S. Army (United States)


Published in SPIE Proceedings Vol. 7298:
Infrared Technology and Applications XXXV
Bjørn F. Andresen; Gabor F. Fulop; Paul R. Norton, Editor(s)

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