Large Voltage Generation of Flexible Thermoelectric Nanocrystal Thin Films by Finger Contact

Jinyong Choi; Kyoungah Cho; Junggwon Yun; Yoonbeom Park; Seunggen Yang; Sangsig Kim

doi:10.1002/aenm.201700972

Large Voltage Generation of Flexible Thermoelectric Nanocrystal Thin Films by Finger Contact

Jinyong Choi
, Kyoungah Cho^*
, Junggwon Yun
, Yoonbeom Park
, Seunggen Yang
, Sangsig Kim

^*Corresponding author for this work

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

43 Citations (Scopus)

Abstract

This paper demonstrates that thermal energy radiated from a human finger can be converted efficiently into electricity by a nanocrystal (NC) thin film that substantially suppresses thermal conduction, but still allows electric conduction. The converting efficiencies of the chalcogenide NC thin films with dimensions 40 µm × 20 µm × 20 nm, prepared on flexible substrates by a solution process, are maximized by adjusting the NC size. A Seebeck coefficient of S = 1829 µV K⁻¹, and a dimensionless thermoelectric figure-of-merit, ZT = 0.68 are achieved at ambient temperature for p- and n-type NC thin films, respectively. A thermoelectric array consisting of p- and n-type NC thin films generates a voltage of 645 mV for a temperature gradient of 10 K. Furthermore, the donut-shaped pn array can generate a voltage of 170 mV from the heat supplied by an individual's finger.

Original language	English
Article number	1700972
Journal	Advanced Energy Materials
Volume	7
Issue number	21
DOIs	https://doi.org/10.1002/aenm.201700972
Publication status	Published - 2017 Nov 8

Bibliographical note

Funding Information:
This work was supported in part by the Mid-career Researcher Program (No. NRF-2016R1E1A1A02920171), the Brain Korea 21 Plus Project in 2017 through the National Research Foundation of Korea (NRF), and the Korea University Grant.

Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

flexible
nanocrystal thin films
power generation
solution-processable
thermoelectric modules

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
General Materials Science

Access to Document

10.1002/aenm.201700972

Cite this

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title = "Large Voltage Generation of Flexible Thermoelectric Nanocrystal Thin Films by Finger Contact",

abstract = "This paper demonstrates that thermal energy radiated from a human finger can be converted efficiently into electricity by a nanocrystal (NC) thin film that substantially suppresses thermal conduction, but still allows electric conduction. The converting efficiencies of the chalcogenide NC thin films with dimensions 40 µm × 20 µm × 20 nm, prepared on flexible substrates by a solution process, are maximized by adjusting the NC size. A Seebeck coefficient of S = 1829 µV K−1, and a dimensionless thermoelectric figure-of-merit, ZT = 0.68 are achieved at ambient temperature for p- and n-type NC thin films, respectively. A thermoelectric array consisting of p- and n-type NC thin films generates a voltage of 645 mV for a temperature gradient of 10 K. Furthermore, the donut-shaped pn array can generate a voltage of 170 mV from the heat supplied by an individual's finger.",

keywords = "flexible, nanocrystal thin films, power generation, solution-processable, thermoelectric modules",

author = "Jinyong Choi and Kyoungah Cho and Junggwon Yun and Yoonbeom Park and Seunggen Yang and Sangsig Kim",

note = "Funding Information: This work was supported in part by the Mid-career Researcher Program (No. NRF-2016R1E1A1A02920171), the Brain Korea 21 Plus Project in 2017 through the National Research Foundation of Korea (NRF), and the Korea University Grant. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH \& Co. KGaA, Weinheim",

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doi = "10.1002/aenm.201700972",

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AU - Choi, Jinyong

AU - Cho, Kyoungah

AU - Yun, Junggwon

AU - Park, Yoonbeom

AU - Yang, Seunggen

AU - Kim, Sangsig

N1 - Funding Information: This work was supported in part by the Mid-career Researcher Program (No. NRF-2016R1E1A1A02920171), the Brain Korea 21 Plus Project in 2017 through the National Research Foundation of Korea (NRF), and the Korea University Grant. Publisher Copyright: © 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

PY - 2017/11/8

Y1 - 2017/11/8

N2 - This paper demonstrates that thermal energy radiated from a human finger can be converted efficiently into electricity by a nanocrystal (NC) thin film that substantially suppresses thermal conduction, but still allows electric conduction. The converting efficiencies of the chalcogenide NC thin films with dimensions 40 µm × 20 µm × 20 nm, prepared on flexible substrates by a solution process, are maximized by adjusting the NC size. A Seebeck coefficient of S = 1829 µV K−1, and a dimensionless thermoelectric figure-of-merit, ZT = 0.68 are achieved at ambient temperature for p- and n-type NC thin films, respectively. A thermoelectric array consisting of p- and n-type NC thin films generates a voltage of 645 mV for a temperature gradient of 10 K. Furthermore, the donut-shaped pn array can generate a voltage of 170 mV from the heat supplied by an individual's finger.

AB - This paper demonstrates that thermal energy radiated from a human finger can be converted efficiently into electricity by a nanocrystal (NC) thin film that substantially suppresses thermal conduction, but still allows electric conduction. The converting efficiencies of the chalcogenide NC thin films with dimensions 40 µm × 20 µm × 20 nm, prepared on flexible substrates by a solution process, are maximized by adjusting the NC size. A Seebeck coefficient of S = 1829 µV K−1, and a dimensionless thermoelectric figure-of-merit, ZT = 0.68 are achieved at ambient temperature for p- and n-type NC thin films, respectively. A thermoelectric array consisting of p- and n-type NC thin films generates a voltage of 645 mV for a temperature gradient of 10 K. Furthermore, the donut-shaped pn array can generate a voltage of 170 mV from the heat supplied by an individual's finger.

KW - flexible

KW - nanocrystal thin films

KW - power generation

KW - solution-processable

KW - thermoelectric modules

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M3 - Article

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SN - 1614-6832

VL - 7

JO - Advanced Energy Materials

JF - Advanced Energy Materials

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M1 - 1700972

ER -

Large Voltage Generation of Flexible Thermoelectric Nanocrystal Thin Films by Finger Contact

Abstract

Bibliographical note

UN SDGs

Keywords

ASJC Scopus subject areas

Access to Document

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