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

doi:10.1063/1.4809677

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

Chemistry & Nanoscience

Research output: Contribution to journal › Article › peer-review

26 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 In₄Se_3-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 language	English
Article number	223901
Journal	Applied Physics Letters
Volume	102
Issue number	22
DOIs	https://doi.org/10.1063/1.4809677
State	Published - 3 Jun 2013

Bibliographical note

Funding Information:
This research was supported by the Basic Science Research Program (2011-0021335), the Nano-Material Technology Development Program (2011-0030147), the Mid-Career Research Program (Strategy) (No. 2012R1A2A1A03005174) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, and a grant from the Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation Planning (KETEP) funded by the Korea government Ministry of Knowledge Economy (No. 20112010100100), and SK Innovation.

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10.1063/1.4809677

Cite this

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title = "Thermoelectric properties of SrTiO3 nano-particles dispersed indium selenide bulk composites",

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.",

author = "Lee, {Min Ho} and Rhyee, {Jong Soo} and Mohammad Vaseem and Hahn, {Yoon Bong} and Park, {Su Dong} and {Jin Kim}, Hee and Kim, {Sung Jin} and Lee, {Hyeung Jin} and Chilsung Kim",

note = "Funding Information: This research was supported by the Basic Science Research Program (2011-0021335), the Nano-Material Technology Development Program (2011-0030147), the Mid-Career Research Program (Strategy) (No. 2012R1A2A1A03005174) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, and a grant from the Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation Planning (KETEP) funded by the Korea government Ministry of Knowledge Economy (No. 20112010100100), and SK Innovation.",

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AU - Lee, Min Ho

AU - Rhyee, Jong Soo

AU - Vaseem, Mohammad

AU - Hahn, Yoon Bong

AU - Park, Su Dong

AU - Jin Kim, Hee

AU - Kim, Sung Jin

AU - Lee, Hyeung Jin

AU - Kim, Chilsung

N1 - Funding Information: This research was supported by the Basic Science Research Program (2011-0021335), the Nano-Material Technology Development Program (2011-0030147), the Mid-Career Research Program (Strategy) (No. 2012R1A2A1A03005174) through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology, and a grant from the Energy Efficiency & Resources program of the Korea Institute of Energy Technology Evaluation Planning (KETEP) funded by the Korea government Ministry of Knowledge Economy (No. 20112010100100), and SK Innovation.

PY - 2013/6/3

Y1 - 2013/6/3

N2 - 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.

AB - 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.

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