Investigation of the physical properties of specimens of the system La/sub 2/Se/sub 3/-PbSe
Journal Article
·
· Inorg. Mater. (Engl. Transl.); (United States)
OSTI ID:5847766
The authors have investigated the temperature dependences of the electrical conductivity and coefficient of thermoemf of La/sub 2/PbSe/sub 4/, La/sub 2/Pb/sub 4/Se/sub 7/, and (La/sub 2/Se/sub 3/)/sub x/(PbSe)/sub 1-x/ (x = 0.02, 0.03) over a wide range of temperatures. It is established that the ternary compounds La/sub 2/PbSe/sub 4/ and La/sub 2/Pb/sub 4/Se/sub 7/ are p-type semiconductors with forbidden-band widths of 1.26 and 0.88 eV respectively. The solid solutions (La/sub 2/Se/sub 3/)/sub x/(PbSe)/sub 1-x/ are also semiconductors with donor and acceptor levels, the positions of which in the forbidden band do not depend on the composition.
- Research Organization:
- V. I. Lenin Azerbaidzhan State Pedagogical Institute, USSR
- OSTI ID:
- 5847766
- Journal Information:
- Inorg. Mater. (Engl. Transl.); (United States), Vol. 23:3; Other Information: Translated from Izv. Akad. Nauk. SSSR. Neorg. Mater.; 23: No. 3, 403-405(Mar 1987)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
LANTHANUM SELENIDES
ELECTRIC CONDUCTIVITY
ELECTROMOTIVE FORCE
THERMOELECTRIC PROPERTIES
LEAD SELENIDES
BAND THEORY
ENERGY GAP
FORBIDDEN TRANSITIONS
P-TYPE CONDUCTORS
SOLID SOLUTIONS
SOLUBILITY
TEMPERATURE DEPENDENCE
CHALCOGENIDES
DISPERSIONS
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
MATERIALS
MIXTURES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR MATERIALS
SOLUTIONS
360603* - Materials- Properties
360602 - Other Materials- Structure & Phase Studies
LANTHANUM SELENIDES
ELECTRIC CONDUCTIVITY
ELECTROMOTIVE FORCE
THERMOELECTRIC PROPERTIES
LEAD SELENIDES
BAND THEORY
ENERGY GAP
FORBIDDEN TRANSITIONS
P-TYPE CONDUCTORS
SOLID SOLUTIONS
SOLUBILITY
TEMPERATURE DEPENDENCE
CHALCOGENIDES
DISPERSIONS
ELECTRICAL PROPERTIES
ENERGY-LEVEL TRANSITIONS
LANTHANUM COMPOUNDS
LEAD COMPOUNDS
MATERIALS
MIXTURES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR MATERIALS
SOLUTIONS
360603* - Materials- Properties
360602 - Other Materials- Structure & Phase Studies