Preparation and Characterization of HgCdSe Alloys.
Abstract
The objectives of this research were to prepare single crystals of various compositions of Hg(1-x)Cd(x)Se alloys and to evaluate the 77-296 K performance capability of these alloys as detectors of infrared radiation, 2.05 micrometer wavelength radiation in particular. The initial plan involved the following three tasks: (1) Prepare single-crystal Hg(1-x)Cd(x)Se alloys with x-values of 0.18, 0.26, and 0.38. Anneal the alloys in Hg-vapor, vacuum, and Se-vapor to obtain a wide range of extrinsic electron concentrations; (2) Measure the Hall coefficient and electrical conductivity of each annealed Hg(1-x)Cd(x)Se alloy over the temperature range of 4.2-296 K; (3) Measure the photoconductivity from 1 to 10 micrometer wavelength of each annealed alloy at 77, 195, and 296 K. Measure the photoconductive-response rise and decay times in the wavelength range of detector utilization of each alloy.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 31, 1976
- Accession Number
- ADA027203
Entities
People
- Charles R. Whitsett
- Christopher J. Summers
- Donald A. Nelson
- James G. Broerman