Development of the HgCdSe Alloy System for Infrared Sensor Applications.
Abstract
The objective of this program was to establish the feasibility of developing selected compositions from the mecury-cadmium-selenide alloy system for infrared sensor applications. The Air Force has requirements in three wavelength regions of the infrared spectrum: 2.5-2.8 micrometers, 4.2-4.5 micrometers, and 8-14 micrometers. The emphasis in this program was on compositions of mercury-cadmium-selenide suitable for these wavelength regions. Principal questions that were to be answered by this research program are: What alloy compositions correspond to the wavelengths of interest. Are these compositions readily grown with reasonably large single-crystal regions where the ratio of mercury to cadmium is uniform. Can stoichiometry be adjusted to provide low carrier concentration, high carrier mobility, and long carrier lifetime. Are there special features such as traps for minority carriers, a large ratio of electron-mobility to hole-mobility, or good stability in vacuum at elevated temperatures to permit high-temperature bake-out.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1977
- Accession Number
- ADA041534
Entities
People
- C. J. Summers
- C. R. Whitsett
- D. A. Nelson
- J. G. Broerman