Thermoelectric figure of merit of [ital n]-Hg[sub 1[minus][ital x]]Cd[sub [ital x]]Se
Journal Article
·
· Journal of Applied Physics; (United States)
- Solid State Division, Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831-6030 (United States) Department of Physics and Astronomy, The University of Tennessee, Knoxville, Tennessee 37996-1200 (United States)
The Seebeck coefficient and conductivity of Hg[sub 1[minus][ital x]]Cd[sub [ital x]]Se is calculated for 0[lt][ital x][lt]0.5, at temperatures below 400 K, and donor concentration between 10[sup 16] and 10[sup 18] cm[sup [minus]3]. These transport coefficients are obtained by solving the Boltzman equation including carriers scattering with optical and acoustic phonons, ionized impurities, and alloy potential. The thermoelectric figure of merit is calculated using these coefficients and measured values of the thermal conductivity. In spite of the very low thermal conductivity of this material ([approx]10 mW/cm K) the thermoelectric figure of merit times temperature is lower than 0.3 at 300 K, and decreases monotonically with decreasing temperature.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6880151
- Journal Information:
- Journal of Applied Physics; (United States), Journal Name: Journal of Applied Physics; (United States) Vol. 77:4; ISSN JAPIAU; ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360606* -- Other Materials-- Physical Properties-- (1992-)
665520 -- Other Methods of Direct Energy Conversion-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOLTZMANN EQUATION
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
COUPLING
DIFFERENTIAL EQUATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
EQUATIONS
MATERIALS
MERCURY COMPOUNDS
MERCURY SELENIDES
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
SEEBECK EFFECT
SELENIDES
SELENIUM COMPOUNDS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOELECTRIC MATERIALS
360606* -- Other Materials-- Physical Properties-- (1992-)
665520 -- Other Methods of Direct Energy Conversion-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BOLTZMANN EQUATION
CADMIUM COMPOUNDS
CADMIUM SELENIDES
CHALCOGENIDES
COUPLING
DIFFERENTIAL EQUATIONS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELECTRON-PHONON COUPLING
EQUATIONS
MATERIALS
MERCURY COMPOUNDS
MERCURY SELENIDES
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
SEEBECK EFFECT
SELENIDES
SELENIUM COMPOUNDS
TEMPERATURE RANGE
TEMPERATURE RANGE 0273-0400 K
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMOELECTRIC MATERIALS