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Title: Thermoelectric properties of MBE-grown HgCdTe-based superlattices from 100K to 300K

Journal Article · · AIP Advances
DOI:https://doi.org/10.1063/1.4959159· OSTI ID:1263683
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This paper reports on the thermoelectric properties of long-period HgCdTe superlattices (MCT SLs) from cryogenic temperature to room temperature. We find that the thermal conductivity is lower than the alloy value especially at low temperatures, the electrical conductivity is similar to that of alloy films, and the Seebeck coefficient is comparable to other SLs. Calculations based on Rytov’s elastic model show that the phonon group velocity is reduced due to folding by more than a factor of two relative to its value in bulk CdTe or HgTe. Thermal conductivity is found to be relatively constant over a wide range of temperatures.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Solar and Thermal Energy Conversion (CSTEC)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC0000957
OSTI ID:
1263683
Alternate ID(s):
OSTI ID: 1370114; OSTI ID: 1421198
Journal Information:
AIP Advances, Journal Name: AIP Advances Vol. 6 Journal Issue: 7; ISSN 2158-3226
Publisher:
American Institute of PhysicsCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 3 works
Citation information provided by
Web of Science

Figures / Tables (7)

FIG. 1(p. 3)figure FIG. 1
FIG. 2(p. 4)figure FIG. 2
FIG. 3(p. 6)figure FIG. 3
FIG. 4(p. 7)figure FIG. 4
Figure-5(p. 7)figure Figure-5
FIG. 6(p. 8)figure FIG. 6
FIG. 7(p. 8)figure FIG. 7

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