Measurement of noise in large-area Hg1-xCdxTe photovoltaic detectors: validation/analysis of results

David S. Smith; Arvind I. D'Souza

doi:10.1117/12.453569

23 January 2003 Measurement of noise in large-area Hg_1-xCd_xTe photovoltaic detectors: validation/analysis of results

David S. Smith, Arvind I. D'Souza

Proceedings Volume 4820, Infrared Technology and Applications XXVIII; (2003) https://doi.org/10.1117/12.453569
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

The National Polar-orbiting Operational Environmental Satellite System (NPOESS) Cross-track Infrared Sounder (CrIS) is a Fourier Transform interferometer-based sensor used to measure earth radiance at high spectral resolution and low spatial resolution. Measured radiance data are analyzed by end users to provide pressure, temperature and moisture profiles of the atmosphere. The CrIS instrument contains Mercury-Cadmium-Telluride (MCT) photovoltaic (PV) detectors with spectral response in the SWIR, MWIR and LWIR ranges. The CrIS instrument requires large area detectors with state-of-the-art detector performance at temperatures attainable with passive cooling. In the case of the LWIR bands noise associated with the detectors limit the instrument performance. In this paper we describe a study of the noise characteristics of a sample of CrIS MCT PV detectors, emphasizing acquisition and validation of 1/f noise measurements for these devices. Interesting aspects of the 1/f noise dependence on bias-voltage and bias-current are noted. The results are analyzed further in a companion paper1 that emphasizes the relationship between leakage current mechanisms in the diodes and 1/f noise observed.

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David S. Smith and Arvind I. D'Souza "Measurement of noise in large-area Hg_1-xCd_xTe photovoltaic detectors: validation/analysis of results", Proc. SPIE 4820, Infrared Technology and Applications XXVIII, (23 January 2003); https://doi.org/10.1117/12.453569

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KEYWORDS

Diodes

Resistors

Sensors

Mercury cadmium telluride

Temperature metrology

Data acquisition

Amplifiers

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