F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 v

Tainan Duan; Maxime Babics; Akmaral Seitkhan; Yuliar Firdaus; Ru Ze Liang; Federico Cruciani; Shengjian Liu; Sergei Lopatin; Pierre M. Beaujuge

doi:10.1039/c8ta02781a

F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 v

Tainan Duan^*, Maxime Babics, Akmaral Seitkhan, Yuliar Firdaus, Ru Ze Liang, Federico Cruciani, Shengjian Liu, Sergei Lopatin, Pierre M. Beaujuge

^*Corresponding author for this work

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

21 Scopus citations

Abstract

We report on a set of two analogous, F-substituted oligothiophene derivatives (D5T6F-M and D7T8F-M), in which systematic fluorination at the thienyl moieties is shown to induce a sufficient increase in electron affinity (EA; i.e. suppressed LUMO level) and in ionization potential (IP; i.e. deeper HOMO) to (i) impart the molecules with electron-accepting and -transporting characteristics, and (ii) yield high open-circuit voltages >1 V in BHJ solar cells when combined with a low-bandgap polymer donor (PCE10) commonly used with fullerenes. The nonfullerene BHJ devices with the SM acceptor D5T6F-M achieve power conversion efficiencies (PCEs) of up to ca. 4.5% (vs. ca. 2% for D7T8F-M-based devices). Our study shows that -F substitutions in SM systems-otherwise used as donors-is an effective approach in the design of nonfullerene acceptors for efficient BHJ solar cells with polymer donors.

Original language	English (US)
Pages (from-to)	9368-9372
Number of pages	5
Journal	JOURNAL OF MATERIALS CHEMISTRY A
Volume	6
Issue number	20
DOIs	https://doi.org/10.1039/c8ta02781a
State	Published - 2018

ASJC Scopus subject areas

General Chemistry
Renewable Energy, Sustainability and the Environment
General Materials Science

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@article{36d5dc93bf1d419398f97dd86b70e2c6,

title = "F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 v",

abstract = "We report on a set of two analogous, F-substituted oligothiophene derivatives (D5T6F-M and D7T8F-M), in which systematic fluorination at the thienyl moieties is shown to induce a sufficient increase in electron affinity (EA; i.e. suppressed LUMO level) and in ionization potential (IP; i.e. deeper HOMO) to (i) impart the molecules with electron-accepting and -transporting characteristics, and (ii) yield high open-circuit voltages >1 V in BHJ solar cells when combined with a low-bandgap polymer donor (PCE10) commonly used with fullerenes. The nonfullerene BHJ devices with the SM acceptor D5T6F-M achieve power conversion efficiencies (PCEs) of up to ca. 4.5% (vs. ca. 2% for D7T8F-M-based devices). Our study shows that -F substitutions in SM systems-otherwise used as donors-is an effective approach in the design of nonfullerene acceptors for efficient BHJ solar cells with polymer donors.",

author = "Tainan Duan and Maxime Babics and Akmaral Seitkhan and Yuliar Firdaus and Liang, {Ru Ze} and Federico Cruciani and Shengjian Liu and Sergei Lopatin and Beaujuge, {Pierre M.}",

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year = "2018",

doi = "10.1039/c8ta02781a",

language = "English (US)",

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T1 - F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 v

AU - Duan, Tainan

AU - Babics, Maxime

AU - Seitkhan, Akmaral

AU - Firdaus, Yuliar

AU - Liang, Ru Ze

AU - Cruciani, Federico

AU - Liu, Shengjian

AU - Lopatin, Sergei

AU - Beaujuge, Pierre M.

PY - 2018

Y1 - 2018

N2 - We report on a set of two analogous, F-substituted oligothiophene derivatives (D5T6F-M and D7T8F-M), in which systematic fluorination at the thienyl moieties is shown to induce a sufficient increase in electron affinity (EA; i.e. suppressed LUMO level) and in ionization potential (IP; i.e. deeper HOMO) to (i) impart the molecules with electron-accepting and -transporting characteristics, and (ii) yield high open-circuit voltages >1 V in BHJ solar cells when combined with a low-bandgap polymer donor (PCE10) commonly used with fullerenes. The nonfullerene BHJ devices with the SM acceptor D5T6F-M achieve power conversion efficiencies (PCEs) of up to ca. 4.5% (vs. ca. 2% for D7T8F-M-based devices). Our study shows that -F substitutions in SM systems-otherwise used as donors-is an effective approach in the design of nonfullerene acceptors for efficient BHJ solar cells with polymer donors.

AB - We report on a set of two analogous, F-substituted oligothiophene derivatives (D5T6F-M and D7T8F-M), in which systematic fluorination at the thienyl moieties is shown to induce a sufficient increase in electron affinity (EA; i.e. suppressed LUMO level) and in ionization potential (IP; i.e. deeper HOMO) to (i) impart the molecules with electron-accepting and -transporting characteristics, and (ii) yield high open-circuit voltages >1 V in BHJ solar cells when combined with a low-bandgap polymer donor (PCE10) commonly used with fullerenes. The nonfullerene BHJ devices with the SM acceptor D5T6F-M achieve power conversion efficiencies (PCEs) of up to ca. 4.5% (vs. ca. 2% for D7T8F-M-based devices). Our study shows that -F substitutions in SM systems-otherwise used as donors-is an effective approach in the design of nonfullerene acceptors for efficient BHJ solar cells with polymer donors.

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DO - 10.1039/c8ta02781a

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JO - JOURNAL OF MATERIALS CHEMISTRY A

JF - JOURNAL OF MATERIALS CHEMISTRY A

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F-Substituted oligothiophenes serve as nonfullerene acceptors in polymer solar cells with open-circuit voltages >1 v

Abstract

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