Annealing effect on thermoelectric characteristics of Spin-coated Cu2Se nanoparticle thin films

Jaehwan Lee; Kyoungah Cho; Taeho Park; Sangsig Kim

doi:10.1016/j.cplett.2022.139893

Annealing effect on thermoelectric characteristics of Spin-coated Cu₂Se nanoparticle thin films

Jaehwan Lee, Kyoungah Cho, Taeho Park, Sangsig Kim

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

3 Citations (Scopus)

Abstract

In this study, we fabricated a spin-coated Cu₂Se nanoparticle (NP) thin film on a plastic substrate and investigated the effects of low-temperature annealing on its thermoelectric characteristics. After thermal annealing at 150 ℃ for 10 min in vacuum, the electrical conductivity of the Cu₂Se NP thin film was dramatically enhanced from 1.05 × 10² to 2.09 × 10⁴ S/m, whereas its thermal conductivity slightly increased from 0.11 to 0.50 W/m∙K. The power factor and the figure of merit of the annealed Cu₂Se NP thin films at room temperature in air was 25.6 μW/m∙K² and 1.54 × 10⁻², respectively.

Original language	English
Article number	139893
Journal	Chemical Physics Letters
Volume	804
DOIs	https://doi.org/10.1016/j.cplett.2022.139893
Publication status	Published - 2022 Oct

Bibliographical note

Funding Information:
This study was supported by the Technology Development Program to Solve Climate Changes [NRF-2017M1A2A2087323], a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) [NRF-2020R1A2C3004538], the Brain Korea 21 Plus Project in 2022 through the NRF funded by the Ministry of Science, and a Korea University Grant.

Publisher Copyright:
© 2022 Elsevier B.V.

Keywords

Copper selenide
Nanoparticles
Thermal annealing
Thermoelectric
Thin films

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

Access to Document

10.1016/j.cplett.2022.139893

Cite this

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title = "Annealing effect on thermoelectric characteristics of Spin-coated Cu2Se nanoparticle thin films",

abstract = "In this study, we fabricated a spin-coated Cu2Se nanoparticle (NP) thin film on a plastic substrate and investigated the effects of low-temperature annealing on its thermoelectric characteristics. After thermal annealing at 150 ℃ for 10 min in vacuum, the electrical conductivity of the Cu2Se NP thin film was dramatically enhanced from 1.05 × 102 to 2.09 × 104 S/m, whereas its thermal conductivity slightly increased from 0.11 to 0.50 W/m∙K. The power factor and the figure of merit of the annealed Cu2Se NP thin films at room temperature in air was 25.6 μW/m∙K2 and 1.54 × 10−2, respectively.",

keywords = "Copper selenide, Nanoparticles, Thermal annealing, Thermoelectric, Thin films",

author = "Jaehwan Lee and Kyoungah Cho and Taeho Park and Sangsig Kim",

note = "Funding Information: This study was supported by the Technology Development Program to Solve Climate Changes [NRF-2017M1A2A2087323], a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) [NRF-2020R1A2C3004538], the Brain Korea 21 Plus Project in 2022 through the NRF funded by the Ministry of Science, and a Korea University Grant. Publisher Copyright: {\textcopyright} 2022 Elsevier B.V.",

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doi = "10.1016/j.cplett.2022.139893",

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T1 - Annealing effect on thermoelectric characteristics of Spin-coated Cu2Se nanoparticle thin films

AU - Lee, Jaehwan

AU - Cho, Kyoungah

AU - Park, Taeho

AU - Kim, Sangsig

N1 - Funding Information: This study was supported by the Technology Development Program to Solve Climate Changes [NRF-2017M1A2A2087323], a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) [NRF-2020R1A2C3004538], the Brain Korea 21 Plus Project in 2022 through the NRF funded by the Ministry of Science, and a Korea University Grant. Publisher Copyright: © 2022 Elsevier B.V.

PY - 2022/10

Y1 - 2022/10

N2 - In this study, we fabricated a spin-coated Cu2Se nanoparticle (NP) thin film on a plastic substrate and investigated the effects of low-temperature annealing on its thermoelectric characteristics. After thermal annealing at 150 ℃ for 10 min in vacuum, the electrical conductivity of the Cu2Se NP thin film was dramatically enhanced from 1.05 × 102 to 2.09 × 104 S/m, whereas its thermal conductivity slightly increased from 0.11 to 0.50 W/m∙K. The power factor and the figure of merit of the annealed Cu2Se NP thin films at room temperature in air was 25.6 μW/m∙K2 and 1.54 × 10−2, respectively.

AB - In this study, we fabricated a spin-coated Cu2Se nanoparticle (NP) thin film on a plastic substrate and investigated the effects of low-temperature annealing on its thermoelectric characteristics. After thermal annealing at 150 ℃ for 10 min in vacuum, the electrical conductivity of the Cu2Se NP thin film was dramatically enhanced from 1.05 × 102 to 2.09 × 104 S/m, whereas its thermal conductivity slightly increased from 0.11 to 0.50 W/m∙K. The power factor and the figure of merit of the annealed Cu2Se NP thin films at room temperature in air was 25.6 μW/m∙K2 and 1.54 × 10−2, respectively.

KW - Copper selenide

KW - Nanoparticles

KW - Thermal annealing

KW - Thermoelectric

KW - Thin films

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DO - 10.1016/j.cplett.2022.139893

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