Analysis of features of the charge transfer mechanism in melts of copper and silver chalcogenides based on studies of electroconductivity and the hall effect

Journal Article · Sun Nov 01 00:00:00 EST 1987 · High Temp. (Engl. Transl.); (United States)

OSTI ID:5288028

Glazov, V M; Mamedov, S M; Burkhanov, A S

Systematic studies were made of the temperature dependence of the Hall effect in the melting-point and liquid-state regions of copper and silver chalcogenides. The experimental data obtained was used together with simple relations of free electron theory to evaluate changes in charge carrier concentration and carrier mobility during melting and heating of melts of A/sub 2//sup I/B/sup VI/ compounds (A/sup I/ is Cu, Ag; B/sup VI/ is S, Se, Te). The thermal width of the forbidden band in the solid phase was calculated, along with the activation energy for thermal generation of charge carriers in the liquid phase. The activational character of the thermal generation of charge carriers in melts of silver sulfide and silver selenide was demonstrated. An explanation is given for the empirically observed reduction in electrical conductivity during heating of melts of Ag/sub 2/S and Ag/sub 2/Se. It was established that melts of the investigated chalcogenides of copper and silver can be classed as liquid semiconductors

• Research Organization: Moscow Institute of Electronics (USSR)
• OSTI ID: 5288028
• Journal Information: High Temp. (Engl. Transl.); (United States), Vol. 25:3; Other Information: Translated from Teplofiz. Vys. Temp.; 25: No. 3, 497-503(May-Jun 1987)
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
COPPER SELENIDES
ELECTRIC CONDUCTIVITY
HALL EFFECT
COPPER SULFIDES
COPPER TELLURIDES
SILVER SELENIDES
SILVER SULFIDES
SILVER TELLURIDES
CARRIER DENSITY
CHARGE CARRIERS
ELECTRON DENSITY
ELECTRON TRANSFER
LIQUID METALS
MELTING POINTS
SEMICONDUCTOR MATERIALS
TEMPERATURE DEPENDENCE
CHALCOGENIDES
COPPER COMPOUNDS
ELECTRICAL PROPERTIES
ELEMENTS
FLUIDS
LIQUIDS
MATERIALS
METALS
PHYSICAL PROPERTIES
SELENIDES
SELENIUM COMPOUNDS
SILVER COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TELLURIDES
TELLURIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
360603* - Materials- Properties
360602 - Other Materials- Structure & Phase Studies