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

Department of Chemistry & Nanoscience

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

31 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.",

year = "2013",

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doi = "10.1063/1.4809677",

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T1 - Thermoelectric properties of SrTiO3 nano-particles dispersed indium selenide bulk composites

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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