Statistics – Applications
Scientific paper
Jul 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980mcdd.reptq....l&link_type=abstract
Interim Report, 5 Dec. 1978 - 5 Jul. 1980 McDonnell-Douglas Technical Services Co., Inc., Houston, TX.
Statistics
Applications
Bridgman Method, Infrared Detectors, Mercury Cadmium Tellurides, Phase Diagrams, Thermal Analysis, Charge Carriers, Computer Programs, Crystal Growth, Electrical Properties, Microgravity Applications, Optical Properties, Scattering Cross Sections, Space Commercialization
Scientific paper
Mercury cadmium telluride crystals were prepared by the Bridgman method with a wide range of crystal growth rates and temperature gradients adequate to prevent constitutional supercooling under diffusion-limited, steady state, growth conditions. The longitudinal compositional gradients for different growth conditions and alloy compositions were calculated and compared with experimental data to develop a quantitative model of the crystal growth kinetics for the Hg(i-x)CdxTe alloys, and measurements were performed to ascertain the effect of growth conditions on radial compositional gradients. The pseudobinary HgTe-CdTe constitutional phase diagram was determined by precision differential thermal analysis measurements and used to calculate the segregation coefficient of Cd as a function of x and interface temperature. Computer algorithms specific to Hg(1-x)CdxTe were developed for calculations of the charge carrier concentrations, charge carrier mobilities, Hall coefficient, optical absorptance, and Fermi energy as functions of x, temperature, ionized donor and acceptor concentrations, and neutral defect concentrations.
Lehoczky Sandor L.
Martin B. G.
Szofran Frank R.
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