Thermoelectric properties of lanthanum sulfide

Journal Article · Thu Aug 15 04:00:00 EDT 1985 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.336088· OSTI ID:5533072

Wood, C; Lockwood, A; Parker, J; Zoltan, A; Zoltan, D; Danielson, L R; Raag, V

The Seebeck coefficient, electrical resistivity, thermal conductivity, and Hall effect have been studied in ..gamma..-phase La/sub 3-x/S/sub 4/ (LaS/sub y/) in the composition range 0.04< or =x< or =0.3 (1.35< or =y< or =1.48) in order to ascertain its suitability for high-temperature (300 to 1400 K) thermoelectric energy conversion. In this temperature and composition range the material behaves as an extrinsic semiconductor whose degenerate carrier concentration is controlled by the stoichiometric ratio of La to S. A maximum figure-of-merit (Z) of approx.5 x 10/sup -4/ K/sup -1/ at a composition x = 0.3, y = 1.48 (LaS/sub 1.48/) was obtained.

• Research Organization: Jet Propulsion Laboratory/California Institute of Technology, Pasadena, California 91109
• OSTI ID: 5533072
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 58:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140502* -- Solar Energy Conversion-- Thermonic &amp; Thermoelectric conversion
36 MATERIALS SCIENCE
360204 -- Ceramics
Cermets
&amp; Refractories-- Physical Properties
CARRIER DENSITY
CHALCOGENIDES
CONVERSION
DIRECT ENERGY CONVERSION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRICITY
ENERGY CONVERSION
HALL EFFECT
HIGH TEMPERATURE
LANTHANUM COMPOUNDS
LANTHANUM SULFIDES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SEEBECK EFFECT
SULFIDES
SULFUR COMPOUNDS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOELECTRIC CONVERSION
THERMOELECTRIC PROPERTIES
THERMOELECTRICITY
VERY HIGH TEMPERATURE