Thermoelectric properties of SrTiO3 nano-particles dispersed indium selenide bulk composites

Min Ho Lee, Jong Soo Rhyee, Mohammad Vaseem, Yoon Bong Hahn, Su Dong Park, Hee Jin Kim, Sung Jin Kim, Hyeung Jin Lee, Chilsung Kim

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21 Scopus citations

Abstract

We investigated the thermoelectric properties of the InSe, InSe/In 4Se3 composite, and SrTiO3 (STO) nano-particles dispersed InSe/In4Se3 bulk composites. The electrical conductivity of the InSe/In4Se3 composite with self-assembled phase separation is significantly increased compared with those of InSe and In4Se3-δ implying the enhancement of surface conductivity between grain boundaries. The thermal conductivity of InSe/In4Se3 composite is decreased compared to those of InSe. When the STO nano-particle dispersion was employed in the InSe/In 4Se3 composite, a coherent interface was observed between nano-particle precipitates and the InSe bulk matrix with a reduction of the thermal conductivity.

Original languageEnglish
Article number223901
JournalApplied Physics Letters
Volume102
Issue number22
DOIs
StatePublished - 3 Jun 2013

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