In:
AIP Advances, AIP Publishing, Vol. 5, No. 4 ( 2015-04-01)
Kurzfassung:
We report on a greatly enhanced power factor for 1%PbS-nanoparticle-embedded TiS2 bulk ceramic, about 1 mW/(mK2) at 300 K and 1.23 mW/(mK2) in a wide temperature range of 573 ∼ 673 K, of which the latter is among the highest so far for TiS2-based thermoelectric materials. Compared to TiS2, the power factor is increased by ∼110% at 300 K and (50 ∼ 35)% at 573 ∼ 673 K. This enhancement is derived from a large increase in Seebeck coefficient which overwhelmed the modest degradation of electrical conductivity, which should be attributed to energy filtering induced by the band gap offset between TiS2 and PbS.
Materialart:
Online-Ressource
ISSN:
2158-3226
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2015
ZDB Id:
2583909-3