Electrical and recombination characteristics of Cd/sub x/Hg/sub 1-x/Te irradiated with electrons at T=300/sup 0/ K

Journal Article · Mon Aug 01 04:00:00 EDT 1977 · Sov. Phys. - Semicond. (Engl. Transl.); (United States)

OSTI ID:5230181

Brudnyi, V N; Voitsekhovskii, A V; Grechukh, Z G; Krivov, M A; Lilenko, Y V; Limarenko, L N; Pashkovskii, M V; Petrov, A S; Potapov, A I

Single crystals of n- and p-type Cd/sub x/Hg/sub 1-x/Te (x%=0.24--0.28) were irradiated at T=300/sup 0/K with 2.0 MeV electrons at doses of up to 2.2 x 10/sup 18/ cm/sup -2/. Studies were made of the electrical (R/sub H/,sigma, and R/sub H/sigma) and recombination (tau) parameters of samples subjected to irradiation and isochronous annealing in the temperature range 300--430/sup 0/ K. It was found that, whatever the initial type of conductivity, the saturation parameters of strongly irradiated Cd/sub x/Hg/sub 1-x/Te crystals corresponded to an n-type material with napprox. =5x10/sup 15/ cm/sup -3/ and R/sub H/sigmaapprox. = (2--4) x 10/sup 4/cm/sup 2/xV/sup -1/xsec/sup -1/ at 78/sup 0/ K. Electrons irradiation did not lead to the formation of additional recombination centers. An isochronous annealing stage was found at T=370--430/sup 0/ K. It is suggested that the observed changes in the properties of Cd/sub x/Hg/sub 1-x/Te under electron irradiation are due to the formation of vacancy clusters.

• Research Organization: V. D. Kuznetsov Siberian Physicotechnical Institute at the State University, Tomsk
• OSTI ID: 5230181
• Journal Information: Sov. Phys. - Semicond. (Engl. Transl.); (United States), Journal Name: Sov. Phys. - Semicond. (Engl. Transl.); (United States) Vol. 11:8; ISSN SPSEA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ANNEALING
CADMIUM COMPOUNDS
COLLISIONS
DISPERSIONS
ELECTRICAL PROPERTIES
ELECTRON COLLISIONS
HEAT TREATMENTS
MEDIUM TEMPERATURE
MERCURY COMPOUNDS
MIXTURES
PHYSICAL PROPERTIES
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
SOLID SOLUTIONS
SOLUTIONS
TELLURIUM COMPOUNDS