Mercury Cadmium Telluride for High Operating Temperature Infrared Detectors

Abstract

High Operating Temperature (HOT) Infrared detectors are required for upgrades of existing Army systems such as the AN/TAS-4 and also for Future Combat Systems. The higher operating temperature for the infrared photon detector could be achieved by suppressing the thermally generated noise. Non-equilibrium mode of operation is an approach to achieve HOT infrared detectors. In this paper, we demonstrate two important milestones that are critical for the development of HOT infrared detectors. First. the growth of high quality (minority carrier lifetime of 7.2 micro-sec at 200K) heterostructures based on mercury cadmium telluride by molecular beam epitaxy for equilibrium and non-equilibrium types of detectors. Secondly, the fabrication of p on n format photovoltaic infrared detectors with very high impedance (R(sub 0)A) on the order of high 10 to the 8th power Ohm-cm2 at 80K are illustrated.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2004
Accession Number
ADA433522

Entities

People

  • G. Brill
  • Jinyan Zhao
  • N. K. Dhar
  • P. S. Wijewarnasuriya
  • R. Ashokan
  • S. Sivananthan
  • T. S. Lee
  • Yu Hao Chang
  • Yunhui Chen

Organizations

  • University of Illinois at Chicago

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Band Gaps
  • Band Structures
  • Conduction Bands
  • Detection
  • Detectors
  • Energy Bands
  • Fabrication
  • Heterojunctions
  • Impedance
  • Infrared Detection
  • Infrared Detectors
  • Materials
  • Measurement
  • Military Research
  • Minority Groups
  • Surface Roughness

Fields of Study

  • Materials science

Readers

  • Combustion science or combustion engineering.
  • Materials Science and Engineering.
  • Optical Physics and Photonics.