Investigation of the physical properties of specimens of the system La/sub 2/Se/sub 3/-PbSe

Journal Article · Sat Aug 01 04:00:00 EDT 1987 · Inorg. Mater. (Engl. Transl.); (United States)

OSTI ID:5847766

Nasibov, I O; Sultanov, T I; Shafagatova, G G; Abilov, C I

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), Journal Name: Inorg. Mater. (Engl. Transl.); (United States) Vol. 23:3; ISSN INOMA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603* -- Materials-- Properties
BAND THEORY
CHALCOGENIDES
DISPERSIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTROMOTIVE FORCE
ENERGY GAP
ENERGY-LEVEL TRANSITIONS
FORBIDDEN TRANSITIONS
LANTHANUM COMPOUNDS
LANTHANUM SELENIDES
LEAD COMPOUNDS
LEAD SELENIDES
MATERIALS
MIXTURES
P-TYPE CONDUCTORS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SELENIDES
SELENIUM COMPOUNDS
SEMICONDUCTOR MATERIALS
SOLID SOLUTIONS
SOLUBILITY
SOLUTIONS
TEMPERATURE DEPENDENCE
THERMOELECTRIC PROPERTIES