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 (ΔTPT) under light exposure and the thermal voltage induced by ΔTPT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (SPTE) and power factors (PFPTE) 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 PFPTE 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 | |
| Publication status | Published - 2019 Jan 1 |
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All Science Journal Classification (ASJC) codes
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
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Photothermally powered conductive films for absorber-free solar thermoelectric harvesting. / Kim, Byeonggwan; Han, Minsu; Kim, Eunkyoung.
In: Journal of Materials Chemistry A, Vol. 7, No. 5, 01.01.2019, p. 2066-2074.Research output: Contribution to journal › Article
TY - JOUR
T1 - Photothermally powered conductive films for absorber-free solar thermoelectric harvesting
AU - Kim, Byeonggwan
AU - Han, Minsu
AU - Kim, Eunkyoung
PY - 2019/1/1
Y1 - 2019/1/1
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 (ΔTPT) under light exposure and the thermal voltage induced by ΔTPT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (SPTE) and power factors (PFPTE) 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 PFPTE 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 (ΔTPT) under light exposure and the thermal voltage induced by ΔTPT for a series of PEDOT films indicated an unparalleled sensitivity to the carrier mobility in PT and TE conversions. The PTE Seebeck coefficients (SPTE) and power factors (PFPTE) 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 PFPTE 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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U2 - 10.1039/c8ta10399b
DO - 10.1039/c8ta10399b
M3 - Article
VL - 7
SP - 2066
EP - 2074
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 5
ER -