Enhanced thermoelectric characteristics of Ag2Se nanoparticle thin films by embedding silicon nanowires

Seunggen Yang; Kyoungah Cho; Sangsig Kim

doi:10.3390/en13123072

Enhanced thermoelectric characteristics of Ag2Se nanoparticle thin films by embedding silicon nanowires

Seunggen Yang, Kyoungah Cho, Sangsig Kim

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

1 Citation (Scopus)

Abstract

A solution-processable Ag2Se nanoparticle thin film (NPTF) is a prospective thermoelectric material for plastic-based thermoelectric generators, but its low electrical conductivity hinders the fabrication of high performance plastic-based thermoelectric generators. In this study, wedesignAg2Se NPTFs embedded with silicon nanowires (SiNWs) to improve their thermoelectric characteristics. The Seebeck coefficients are -233 and -240 μV/K, respectively, for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs. For the Ag2Se NPTF embedded with SiNWs, the electrical conductivity is improved from 0.15 to 18.5 S/m with the embedment of SiNWs. The thermal conductivities are determined by a lateral thermal conductivity measurement for nanomaterials and the thermal conductivities are 0.62 and 0.84 W/(m K) for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs, respectively. Due to the significant increase in the electrical conductivity and the insignificant increase in its thermal conductivity, the output power of the Ag2Se NPTF embedded with SiNWs is 120 times greater than that of the Ag2Se NPTF alone. Our results demonstrate that the Ag2Se NPTF embedded with SiNWs is a prospective thermoelectric material for high performance plastic-based thermoelectric generators.

Original language	English
Article number	en13123072
Journal	Energies
Volume	13
Issue number	12
DOIs	https://doi.org/10.3390/en13123072
Publication status	Published - 2020 Jun

Bibliographical note

Funding Information:
Funding: This research was funded by [the Technology Development Program to Solve Climate Changes] grant number [NRF-2017M1A2A2087323]. And [the Brain Korea 21 Plus Project] in 2020 through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning, and a Korea University Grant.

Publisher Copyright:
© 2020 by the authors.

Keywords

Silicon nanowires
Silver selenide nanoparticles
Thermoelectric
Thin film

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Energy (miscellaneous)
Control and Optimization
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.3390/en13123072

Cite this

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title = "Enhanced thermoelectric characteristics of Ag2Se nanoparticle thin films by embedding silicon nanowires",

abstract = "A solution-processable Ag2Se nanoparticle thin film (NPTF) is a prospective thermoelectric material for plastic-based thermoelectric generators, but its low electrical conductivity hinders the fabrication of high performance plastic-based thermoelectric generators. In this study, wedesignAg2Se NPTFs embedded with silicon nanowires (SiNWs) to improve their thermoelectric characteristics. The Seebeck coefficients are -233 and -240 μV/K, respectively, for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs. For the Ag2Se NPTF embedded with SiNWs, the electrical conductivity is improved from 0.15 to 18.5 S/m with the embedment of SiNWs. The thermal conductivities are determined by a lateral thermal conductivity measurement for nanomaterials and the thermal conductivities are 0.62 and 0.84 W/(m K) for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs, respectively. Due to the significant increase in the electrical conductivity and the insignificant increase in its thermal conductivity, the output power of the Ag2Se NPTF embedded with SiNWs is 120 times greater than that of the Ag2Se NPTF alone. Our results demonstrate that the Ag2Se NPTF embedded with SiNWs is a prospective thermoelectric material for high performance plastic-based thermoelectric generators.",

keywords = "Silicon nanowires, Silver selenide nanoparticles, Thermoelectric, Thin film",

author = "Seunggen Yang and Kyoungah Cho and Sangsig Kim",

note = "Funding Information: Funding: This research was funded by [the Technology Development Program to Solve Climate Changes] grant number [NRF-2017M1A2A2087323]. And [the Brain Korea 21 Plus Project] in 2020 through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning, and a Korea University Grant. Publisher Copyright: {\textcopyright} 2020 by the authors.",

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N2 - A solution-processable Ag2Se nanoparticle thin film (NPTF) is a prospective thermoelectric material for plastic-based thermoelectric generators, but its low electrical conductivity hinders the fabrication of high performance plastic-based thermoelectric generators. In this study, wedesignAg2Se NPTFs embedded with silicon nanowires (SiNWs) to improve their thermoelectric characteristics. The Seebeck coefficients are -233 and -240 μV/K, respectively, for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs. For the Ag2Se NPTF embedded with SiNWs, the electrical conductivity is improved from 0.15 to 18.5 S/m with the embedment of SiNWs. The thermal conductivities are determined by a lateral thermal conductivity measurement for nanomaterials and the thermal conductivities are 0.62 and 0.84 W/(m K) for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs, respectively. Due to the significant increase in the electrical conductivity and the insignificant increase in its thermal conductivity, the output power of the Ag2Se NPTF embedded with SiNWs is 120 times greater than that of the Ag2Se NPTF alone. Our results demonstrate that the Ag2Se NPTF embedded with SiNWs is a prospective thermoelectric material for high performance plastic-based thermoelectric generators.

AB - A solution-processable Ag2Se nanoparticle thin film (NPTF) is a prospective thermoelectric material for plastic-based thermoelectric generators, but its low electrical conductivity hinders the fabrication of high performance plastic-based thermoelectric generators. In this study, wedesignAg2Se NPTFs embedded with silicon nanowires (SiNWs) to improve their thermoelectric characteristics. The Seebeck coefficients are -233 and -240 μV/K, respectively, for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs. For the Ag2Se NPTF embedded with SiNWs, the electrical conductivity is improved from 0.15 to 18.5 S/m with the embedment of SiNWs. The thermal conductivities are determined by a lateral thermal conductivity measurement for nanomaterials and the thermal conductivities are 0.62 and 0.84 W/(m K) for a Ag2Se NPTF alone and a Ag2Se NPTF embedded with SiNWs, respectively. Due to the significant increase in the electrical conductivity and the insignificant increase in its thermal conductivity, the output power of the Ag2Se NPTF embedded with SiNWs is 120 times greater than that of the Ag2Se NPTF alone. Our results demonstrate that the Ag2Se NPTF embedded with SiNWs is a prospective thermoelectric material for high performance plastic-based thermoelectric generators.

KW - Silicon nanowires

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KW - Thin film

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Enhanced thermoelectric characteristics of Ag2Se nanoparticle thin films by embedding silicon nanowires

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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