Photothermally powered conductive films for absorber-free solar thermoelectric harvesting

Byeonggwan Kim; Minsu Han; Eunkyoung Kim

doi:10.1039/c8ta10399b

Photothermally powered conductive films for absorber-free solar thermoelectric harvesting

Byeonggwan Kim, Minsu Han, Eunkyoung Kim

Department of Chemical and Biomolecular Engineering

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

17 Citations (Scopus)

Abstract

The photothermoelectric (PTE) effect in conductive polymers is significant because it combines high photothermal (PT) and thermoelectric (TE) effects. Using poly(3,4-ethylenedioxythiophene) (PEDOT) films with various conductivities and crystallinities, the PTE effect in thin films can be established. The PT temperature increase (ΔT _PT ) under light exposure and the thermal voltage induced by ΔT _PT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (S _PTE ) and power factors (PF _PTE ) for the PEDOT films correlated well with those in the dark state, indicating that the PTE effect in PEDOT can be translated into the TE effect induced by heating upon light exposure. The 180 nm-thick pristine PEDOT film shows high PF _PTE values of 620 and 590 μW m ^-1 K ^-2 for a near-infrared laser and sunlight, respectively. The thin-film solar TE harvester with four PEDOT legs generates a power density of 38 mW m ^-2 and an energy density of 420 W h g ^-1 , demonstrating the first and highest absorber-free organic solar TE output yet reported. Thus, the PT conversion mechanisms in CP films can be extended to thin-film solar energy harvesters.

Original language	English
Pages (from-to)	2066-2074
Number of pages	9
Journal	Journal of Materials Chemistry A
Volume	7
Issue number	5
DOIs	https://doi.org/10.1039/c8ta10399b
Publication status	Published - 2019

Bibliographical note

Funding Information:
This research was supported by a National Research Foundation (NRF) grant funded by the Korean government (Ministry of Science, ICT & Future Planning, MSIP) through the Global Research Lab (2016K1A1A2912753), Brain Pool program (2018H1D3A2001751), Creative Materials Discovery Program (2018M3D1A1058536), and a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI15C0942). This work was supported (in part) by the Yonsei University Research Fund (Post Doc. Researcher Supporting Program) of 2016 (project no. 2016-12-0015).

Publisher Copyright:
© 2019 The Royal Society of Chemistry.

All Science Journal Classification (ASJC) codes

Chemistry(all)
Renewable Energy, Sustainability and the Environment
Materials Science(all)

UN SDGs

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

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10.1039/c8ta10399b

Cite this

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title = "Photothermally powered conductive films for absorber-free solar thermoelectric harvesting",

abstract = " The photothermoelectric (PTE) effect in conductive polymers is significant because it combines high photothermal (PT) and thermoelectric (TE) effects. Using poly(3,4-ethylenedioxythiophene) (PEDOT) films with various conductivities and crystallinities, the PTE effect in thin films can be established. The PT temperature increase (ΔT PT ) under light exposure and the thermal voltage induced by ΔT PT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (S PTE ) and power factors (PF PTE ) for the PEDOT films correlated well with those in the dark state, indicating that the PTE effect in PEDOT can be translated into the TE effect induced by heating upon light exposure. The 180 nm-thick pristine PEDOT film shows high PF PTE values of 620 and 590 μW m -1 K -2 for a near-infrared laser and sunlight, respectively. The thin-film solar TE harvester with four PEDOT legs generates a power density of 38 mW m -2 and an energy density of 420 W h g -1 , demonstrating the first and highest absorber-free organic solar TE output yet reported. Thus, the PT conversion mechanisms in CP films can be extended to thin-film solar energy harvesters.",

author = "Byeonggwan Kim and Minsu Han and Eunkyoung Kim",

note = "Funding Information: This research was supported by a National Research Foundation (NRF) grant funded by the Korean government (Ministry of Science, ICT & Future Planning, MSIP) through the Global Research Lab (2016K1A1A2912753), Brain Pool program (2018H1D3A2001751), Creative Materials Discovery Program (2018M3D1A1058536), and a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI15C0942). This work was supported (in part) by the Yonsei University Research Fund (Post Doc. Researcher Supporting Program) of 2016 (project no. 2016-12-0015). Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",

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doi = "10.1039/c8ta10399b",

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N1 - Funding Information: This research was supported by a National Research Foundation (NRF) grant funded by the Korean government (Ministry of Science, ICT & Future Planning, MSIP) through the Global Research Lab (2016K1A1A2912753), Brain Pool program (2018H1D3A2001751), Creative Materials Discovery Program (2018M3D1A1058536), and a grant of the Korea Health Technology R&D Project through the Korea Health Industry Development Institute (KHIDI), funded by the Ministry of Health & Welfare, Republic of Korea (grant number: HI15C0942). This work was supported (in part) by the Yonsei University Research Fund (Post Doc. Researcher Supporting Program) of 2016 (project no. 2016-12-0015). Publisher Copyright: © 2019 The Royal Society of Chemistry.

PY - 2019

Y1 - 2019

N2 - The photothermoelectric (PTE) effect in conductive polymers is significant because it combines high photothermal (PT) and thermoelectric (TE) effects. Using poly(3,4-ethylenedioxythiophene) (PEDOT) films with various conductivities and crystallinities, the PTE effect in thin films can be established. The PT temperature increase (ΔT PT ) under light exposure and the thermal voltage induced by ΔT PT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (S PTE ) and power factors (PF PTE ) for the PEDOT films correlated well with those in the dark state, indicating that the PTE effect in PEDOT can be translated into the TE effect induced by heating upon light exposure. The 180 nm-thick pristine PEDOT film shows high PF PTE values of 620 and 590 μW m -1 K -2 for a near-infrared laser and sunlight, respectively. The thin-film solar TE harvester with four PEDOT legs generates a power density of 38 mW m -2 and an energy density of 420 W h g -1 , demonstrating the first and highest absorber-free organic solar TE output yet reported. Thus, the PT conversion mechanisms in CP films can be extended to thin-film solar energy harvesters.

AB - The photothermoelectric (PTE) effect in conductive polymers is significant because it combines high photothermal (PT) and thermoelectric (TE) effects. Using poly(3,4-ethylenedioxythiophene) (PEDOT) films with various conductivities and crystallinities, the PTE effect in thin films can be established. The PT temperature increase (ΔT PT ) under light exposure and the thermal voltage induced by ΔT PT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (S PTE ) and power factors (PF PTE ) for the PEDOT films correlated well with those in the dark state, indicating that the PTE effect in PEDOT can be translated into the TE effect induced by heating upon light exposure. The 180 nm-thick pristine PEDOT film shows high PF PTE values of 620 and 590 μW m -1 K -2 for a near-infrared laser and sunlight, respectively. The thin-film solar TE harvester with four PEDOT legs generates a power density of 38 mW m -2 and an energy density of 420 W h g -1 , demonstrating the first and highest absorber-free organic solar TE output yet reported. Thus, the PT conversion mechanisms in CP films can be extended to thin-film solar energy harvesters.

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JF - Journal of Materials Chemistry A

SN - 2050-7488

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Photothermally powered conductive films for absorber-free solar thermoelectric harvesting

Abstract

Bibliographical note

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UN SDGs

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