High-Performance and Stable Nonfullerene Acceptor-Based Organic Solar Cells for Indoor to Outdoor Light

Sungmin Park; Hyungju Ahn; Ji Yeong Kim; Jong Baek Park; Junghwan Kim; Sang Hyuk Im; Hae Jung Son

doi:10.1021/acsenergylett.9b01819

High-Performance and Stable Nonfullerene Acceptor-Based Organic Solar Cells for Indoor to Outdoor Light

Sungmin Park, Hyungju Ahn, Ji Yeong Kim, Jong Baek Park, Junghwan Kim, Sang Hyuk Im, Hae Jung Son

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

86 Citations (Scopus)

Abstract

We synthesized a donor polymer of bis(2-ethylhexyl)thiophene-substituted benzodithiophene (BDT-Th) and 1,3-bis(2-ethylhexyl)-5,7-di(thiophene-2-yl)benzo[1,2-c:4,5-c′]dithiophene-4,8-dione, for which the BDT-Th unit includes chlorine and sulfur-bridged 2-ethylhexyl in the thiophene side group. When compared with PBDB-TF, which includes fluorine and 2-ethylhexyl in BDT-Th, PBDB-TSCl shows more efficient exciton dissociation and charge generation, which is probably because large dipole moment changes from ground to excited states lead to reduced exciton binding energy. Consequently, despite a small donor-acceptor interface in the bulk heterojunction (BHJ) film, PBDB-TSCl achieves higher photovoltaic performance than PBDB-TF under various light intensities; PBDB-TSCl achieved higher efficiency (13.13%) than the 12.12% of PBDB-TF under 1 sun illumination. Moreover, PBDB-TSCl showed the highest efficiency of 21.53% with fill factor (FF) of 76.29% under a 500 lx fluorescence lamp, whereas PBDB-TF has lower efficiency of 15.57% with FF of 65.25%. Furthermore, the PBDB-TSCl device shows improved thermal stability due to the more stabilized morphology of its BHJ film.

Original language	English
Pages (from-to)	170-179
Number of pages	10
Journal	ACS Energy Letters
Volume	5
Issue number	1
DOIs	https://doi.org/10.1021/acsenergylett.9b01819
Publication status	Published - 2020 Jan 10

Bibliographical note

Publisher Copyright:
Copyright © 2019 American Chemical Society.

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

UN SDGs

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

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10.1021/acsenergylett.9b01819

Cite this

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title = "High-Performance and Stable Nonfullerene Acceptor-Based Organic Solar Cells for Indoor to Outdoor Light",

abstract = "We synthesized a donor polymer of bis(2-ethylhexyl)thiophene-substituted benzodithiophene (BDT-Th) and 1,3-bis(2-ethylhexyl)-5,7-di(thiophene-2-yl)benzo[1,2-c:4,5-c′]dithiophene-4,8-dione, for which the BDT-Th unit includes chlorine and sulfur-bridged 2-ethylhexyl in the thiophene side group. When compared with PBDB-TF, which includes fluorine and 2-ethylhexyl in BDT-Th, PBDB-TSCl shows more efficient exciton dissociation and charge generation, which is probably because large dipole moment changes from ground to excited states lead to reduced exciton binding energy. Consequently, despite a small donor-acceptor interface in the bulk heterojunction (BHJ) film, PBDB-TSCl achieves higher photovoltaic performance than PBDB-TF under various light intensities; PBDB-TSCl achieved higher efficiency (13.13%) than the 12.12% of PBDB-TF under 1 sun illumination. Moreover, PBDB-TSCl showed the highest efficiency of 21.53% with fill factor (FF) of 76.29% under a 500 lx fluorescence lamp, whereas PBDB-TF has lower efficiency of 15.57% with FF of 65.25%. Furthermore, the PBDB-TSCl device shows improved thermal stability due to the more stabilized morphology of its BHJ film.",

author = "Sungmin Park and Hyungju Ahn and Kim, {Ji Yeong} and Park, {Jong Baek} and Junghwan Kim and Im, {Sang Hyuk} and Son, {Hae Jung}",

note = "Publisher Copyright: Copyright {\textcopyright} 2019 American Chemical Society.",

year = "2020",

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day = "10",

doi = "10.1021/acsenergylett.9b01819",

language = "English",

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AU - Park, Sungmin

AU - Ahn, Hyungju

AU - Kim, Ji Yeong

AU - Park, Jong Baek

AU - Kim, Junghwan

AU - Im, Sang Hyuk

AU - Son, Hae Jung

PY - 2020/1/10

Y1 - 2020/1/10

N2 - We synthesized a donor polymer of bis(2-ethylhexyl)thiophene-substituted benzodithiophene (BDT-Th) and 1,3-bis(2-ethylhexyl)-5,7-di(thiophene-2-yl)benzo[1,2-c:4,5-c′]dithiophene-4,8-dione, for which the BDT-Th unit includes chlorine and sulfur-bridged 2-ethylhexyl in the thiophene side group. When compared with PBDB-TF, which includes fluorine and 2-ethylhexyl in BDT-Th, PBDB-TSCl shows more efficient exciton dissociation and charge generation, which is probably because large dipole moment changes from ground to excited states lead to reduced exciton binding energy. Consequently, despite a small donor-acceptor interface in the bulk heterojunction (BHJ) film, PBDB-TSCl achieves higher photovoltaic performance than PBDB-TF under various light intensities; PBDB-TSCl achieved higher efficiency (13.13%) than the 12.12% of PBDB-TF under 1 sun illumination. Moreover, PBDB-TSCl showed the highest efficiency of 21.53% with fill factor (FF) of 76.29% under a 500 lx fluorescence lamp, whereas PBDB-TF has lower efficiency of 15.57% with FF of 65.25%. Furthermore, the PBDB-TSCl device shows improved thermal stability due to the more stabilized morphology of its BHJ film.

AB - We synthesized a donor polymer of bis(2-ethylhexyl)thiophene-substituted benzodithiophene (BDT-Th) and 1,3-bis(2-ethylhexyl)-5,7-di(thiophene-2-yl)benzo[1,2-c:4,5-c′]dithiophene-4,8-dione, for which the BDT-Th unit includes chlorine and sulfur-bridged 2-ethylhexyl in the thiophene side group. When compared with PBDB-TF, which includes fluorine and 2-ethylhexyl in BDT-Th, PBDB-TSCl shows more efficient exciton dissociation and charge generation, which is probably because large dipole moment changes from ground to excited states lead to reduced exciton binding energy. Consequently, despite a small donor-acceptor interface in the bulk heterojunction (BHJ) film, PBDB-TSCl achieves higher photovoltaic performance than PBDB-TF under various light intensities; PBDB-TSCl achieved higher efficiency (13.13%) than the 12.12% of PBDB-TF under 1 sun illumination. Moreover, PBDB-TSCl showed the highest efficiency of 21.53% with fill factor (FF) of 76.29% under a 500 lx fluorescence lamp, whereas PBDB-TF has lower efficiency of 15.57% with FF of 65.25%. Furthermore, the PBDB-TSCl device shows improved thermal stability due to the more stabilized morphology of its BHJ film.

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High-Performance and Stable Nonfullerene Acceptor-Based Organic Solar Cells for Indoor to Outdoor Light

Abstract

Bibliographical note

ASJC Scopus subject areas

UN SDGs

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