Journal
APPLIED PHYSICS EXPRESS
Volume 8, Issue 11, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.8.111801
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Funding
- TEET
- [25707031]
- Grants-in-Aid for Scientific Research [26600077, 25707031, 15H05886] Funding Source: KAKEN
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We examined the thermoelectric properties of a densified (hot-pressed) sample of the layered BiCh(2)-based (Ch: S, Se) compound LaOBiSSe. The values obtained for the power factor (S-2/rho) when measured perpendicular to the pressing direction (P-perpendicular to) were higher than those when measured parallel to the pressing direction (P-parallel to). The thermal conductivity (kappa) of the samples was also sensitive to the crystal orientation. The values of kappa measured along P-parallel to were lower than those measured along P-perpendicular to. The highest dimensionless figure-of-merit (ZT similar to 0.36) was obtained at around 650K in both directions, i.e., P-perpendicular to and P-parallel to. (C) 2015 The Japan Society of Applied Physics
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