An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses

Zhuping Fei; Flurin D. Eisner; Xuechen Jiao; Mohammed Azzouzi; Jason A. Röhr; Yang Han; Munazza Shahid; Anthony S.R. Chesman; Christopher D. Easton; Christopher R. McNeill; Thomas D. Anthopoulos; Jenny Nelson; Martin Heeney

doi:10.1002/adma.201705209

An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses

Zhuping Fei, Flurin D. Eisner, Xuechen Jiao, Mohammed Azzouzi, Jason A. Röhr, Yang Han^*, Munazza Shahid, Anthony S.R. Chesman, Christopher D. Easton, Christopher R. McNeill, Thomas D. Anthopoulos, Jenny Nelson, Martin Heeney

^*Corresponding author for this work

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

486 Scopus citations

Abstract

A new synthetic route, to prepare an alkylated indacenodithieno[3,2-b]thiophene-based nonfullerene acceptor (C8-ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8-ITIC exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize. Accordingly, blends with the donor polymer PBDB-T exhibit a power conversion efficiency (PCE) up to 12.4%. Further improvements in efficiency are found upon backbone fluorination of the donor polymer to afford the novel material PFBDB-T. The resulting blend with C8-ITIC shows an impressive PCE up to 13.2% as a result of the higher open-circuit voltage. Electroluminescence studies demonstrate that backbone fluorination reduces the energy loss of the blends, with PFBDB-T/C8-ITIC-based cells exhibiting a small energy loss of 0.6 eV combined with a high J_SC of 19.6 mA cm⁻².

Original language	English (US)
Article number	1705209
Journal	Advanced Materials
Volume	30
Issue number	8
DOIs	https://doi.org/10.1002/adma.201705209
State	Published - Feb 22 2018

Keywords

conjugated polymers
crystal engineering
nonfullerene acceptors
organic solar cells

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.1002/adma.201705209

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Fei, Z., Eisner, F. D., Jiao, X., Azzouzi, M., Röhr, J. A., Han, Y., Shahid, M., Chesman, A. S. R., Easton, C. D., McNeill, C. R., Anthopoulos, T. D., Nelson, J., & Heeney, M. (2018). An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses. Advanced Materials, 30(8), Article 1705209. https://doi.org/10.1002/adma.201705209

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title = "An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses",

abstract = "A new synthetic route, to prepare an alkylated indacenodithieno[3,2-b]thiophene-based nonfullerene acceptor (C8-ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8-ITIC exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize. Accordingly, blends with the donor polymer PBDB-T exhibit a power conversion efficiency (PCE) up to 12.4%. Further improvements in efficiency are found upon backbone fluorination of the donor polymer to afford the novel material PFBDB-T. The resulting blend with C8-ITIC shows an impressive PCE up to 13.2% as a result of the higher open-circuit voltage. Electroluminescence studies demonstrate that backbone fluorination reduces the energy loss of the blends, with PFBDB-T/C8-ITIC-based cells exhibiting a small energy loss of 0.6 eV combined with a high JSC of 19.6 mA cm−2.",

keywords = "conjugated polymers, crystal engineering, nonfullerene acceptors, organic solar cells",

author = "Zhuping Fei and Eisner, {Flurin D.} and Xuechen Jiao and Mohammed Azzouzi and R{\"o}hr, {Jason A.} and Yang Han and Munazza Shahid and Chesman, {Anthony S.R.} and Easton, {Christopher D.} and McNeill, {Christopher R.} and Anthopoulos, {Thomas D.} and Jenny Nelson and Martin Heeney",

note = "Publisher Copyright: {\textcopyright} 2018 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2018",

month = feb,

day = "22",

doi = "10.1002/adma.201705209",

language = "English (US)",

volume = "30",

journal = "Advanced Materials",

issn = "0935-9648",

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Fei, Z, Eisner, FD, Jiao, X, Azzouzi, M, Röhr, JA, Han, Y, Shahid, M, Chesman, ASR, Easton, CD, McNeill, CR, Anthopoulos, TD, Nelson, J & Heeney, M 2018, 'An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses', Advanced Materials, vol. 30, no. 8, 1705209. https://doi.org/10.1002/adma.201705209

An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses. / Fei, Zhuping; Eisner, Flurin D.; Jiao, Xuechen et al.
In: Advanced Materials, Vol. 30, No. 8, 1705209, 22.02.2018.

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

TY - JOUR

T1 - An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses

AU - Fei, Zhuping

AU - Eisner, Flurin D.

AU - Jiao, Xuechen

AU - Azzouzi, Mohammed

AU - Röhr, Jason A.

AU - Han, Yang

AU - Shahid, Munazza

AU - Chesman, Anthony S.R.

AU - Easton, Christopher D.

AU - McNeill, Christopher R.

AU - Anthopoulos, Thomas D.

AU - Nelson, Jenny

AU - Heeney, Martin

PY - 2018/2/22

Y1 - 2018/2/22

N2 - A new synthetic route, to prepare an alkylated indacenodithieno[3,2-b]thiophene-based nonfullerene acceptor (C8-ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8-ITIC exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize. Accordingly, blends with the donor polymer PBDB-T exhibit a power conversion efficiency (PCE) up to 12.4%. Further improvements in efficiency are found upon backbone fluorination of the donor polymer to afford the novel material PFBDB-T. The resulting blend with C8-ITIC shows an impressive PCE up to 13.2% as a result of the higher open-circuit voltage. Electroluminescence studies demonstrate that backbone fluorination reduces the energy loss of the blends, with PFBDB-T/C8-ITIC-based cells exhibiting a small energy loss of 0.6 eV combined with a high JSC of 19.6 mA cm−2.

AB - A new synthetic route, to prepare an alkylated indacenodithieno[3,2-b]thiophene-based nonfullerene acceptor (C8-ITIC), is reported. Compared to the reported ITIC with phenylalkyl side chains, the new acceptor C8-ITIC exhibits a reduction in the optical band gap, higher absorptivity, and an increased propensity to crystallize. Accordingly, blends with the donor polymer PBDB-T exhibit a power conversion efficiency (PCE) up to 12.4%. Further improvements in efficiency are found upon backbone fluorination of the donor polymer to afford the novel material PFBDB-T. The resulting blend with C8-ITIC shows an impressive PCE up to 13.2% as a result of the higher open-circuit voltage. Electroluminescence studies demonstrate that backbone fluorination reduces the energy loss of the blends, with PFBDB-T/C8-ITIC-based cells exhibiting a small energy loss of 0.6 eV combined with a high JSC of 19.6 mA cm−2.

KW - conjugated polymers

KW - crystal engineering

KW - nonfullerene acceptors

KW - organic solar cells

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U2 - 10.1002/adma.201705209

DO - 10.1002/adma.201705209

M3 - Article

C2 - 29315933

AN - SCOPUS:85040235299

SN - 0935-9648

VL - 30

JO - Advanced Materials

JF - Advanced Materials

IS - 8

M1 - 1705209

ER -

An Alkylated Indacenodithieno[3,2-b]thiophene-Based Nonfullerene Acceptor with High Crystallinity Exhibiting Single Junction Solar Cell Efficiencies Greater than 13% with Low Voltage Losses

Abstract

Keywords

ASJC Scopus subject areas

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