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Proceedings Paper

Non-Equilibrium Devices For Infrared Detection
Author(s): T Ashley; C T Elliott; A M White
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Paper Abstract

A non-equilibrium mode of operation for semiconductor infrared photodetectors is proposed which will enable their cooling requirements to be substantially reduced. The operating temperature of 3-5 μm band detectors may be raised from - 200K to near ambient, whilst for the 8-12 μm band devices thermoelectric coolers can be considered in place of liquified nitrogen systems. The phenomena of minority carrier exclusion and extraction are utilised in order to maintain the densities of both carrier types well below the near intrinsic, equilibrium values associated with these elevated temperatures, with consequent improvements in responsivity and D.

Paper Details

Date Published: 23 February 1985
PDF: 10 pages
Proc. SPIE 0572, Infrared Technology XI, (23 February 1985); doi: 10.1117/12.950682
Show Author Affiliations
T Ashley, Royal Signals and Radar Establishment (England)
C T Elliott, Royal Signals and Radar Establishment (England)
A M White, Royal Signals and Radar Establishment (England)


Published in SPIE Proceedings Vol. 0572:
Infrared Technology XI
Richard A. Mollicone; Irving J. Spiro, Editor(s)

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