Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

Zeyuan Li; Shuixing Dai; Jingming Xin; Lin Zhang; Yang Wu; Jeromy Rech; Fuwen Zhao; Tengfei Li; Kuan Liu; Qiao Liu; Wei Ma; Wei You; Chunru Wang; Xiaowei Zhan

doi:10.1039/c7qm00547d

Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

Zeyuan Li, Shuixing Dai, Jingming Xin, Lin Zhang, Yang Wu, Jeromy Rech, Fuwen Zhao, Tengfei Li, Kuan Liu, Qiao Liu, Wei Ma, Wei You, Chunru Wang, Xiaowei Zhan

Department of Electronic and Information Engineering

Research output: Journal article publication › Journal article › Academic research › peer-review

45 Citations (Scopus)

Abstract

We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the substituents on the end-groups on the electronic properties, charge transport, film morphology, and photovoltaic properties of the ITIC-Th series. The electron-withdrawing ability increases from methoxylated to unsubstituted, fluorinated, and difluorinated IC, leading to a downshift of energy levels and a redshift of absorption spectra. Optimized organic solar cells based on the ITIC-Th series show power conversion efficiencies ranging from 8.88% to 12.1%.

Original language	English
Pages (from-to)	537-543
Number of pages	7
Journal	Materials Chemistry Frontiers
Volume	2
Issue number	3
DOIs	https://doi.org/10.1039/c7qm00547d
Publication status	Published - 2018

ASJC Scopus subject areas

Materials Science(all)
Materials Chemistry

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

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10.1039/c7qm00547d

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title = "Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups",

abstract = "We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the substituents on the end-groups on the electronic properties, charge transport, film morphology, and photovoltaic properties of the ITIC-Th series. The electron-withdrawing ability increases from methoxylated to unsubstituted, fluorinated, and difluorinated IC, leading to a downshift of energy levels and a redshift of absorption spectra. Optimized organic solar cells based on the ITIC-Th series show power conversion efficiencies ranging from 8.88% to 12.1%.",

author = "Zeyuan Li and Shuixing Dai and Jingming Xin and Lin Zhang and Yang Wu and Jeromy Rech and Fuwen Zhao and Tengfei Li and Kuan Liu and Qiao Liu and Wei Ma and Wei You and Chunru Wang and Xiaowei Zhan",

note = "Funding Information: X. Z. wish to thank NSFC (No. 21734001 and 51761165023). W. Y. thanks NSF (DMR-1507249 and CBET-1639429). W. M. thanks the Ministry of Science and Technology of China (2016YFA0200700) and NSFC (21504066 and 21534003). X-ray data was acquired at beamlines 7.3.3 and 11.0.1.2 at the Advanced Light Source, which was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. The authors thank Chenhui Zhu at beamline 7.3.3, and Cheng Wang at beamline 11.0.1.2 for assistance with data acquisition. Publisher Copyright: {\textcopyright} 2018 Royal Society of Chemistry. All rights reserved.",

year = "2018",

doi = "10.1039/c7qm00547d",

language = "English",

volume = "2",

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AU - Li, Zeyuan

AU - Dai, Shuixing

AU - Xin, Jingming

AU - Zhang, Lin

AU - Wu, Yang

AU - Rech, Jeromy

AU - Zhao, Fuwen

AU - Li, Tengfei

AU - Liu, Kuan

AU - Liu, Qiao

AU - Ma, Wei

AU - You, Wei

AU - Wang, Chunru

AU - Zhan, Xiaowei

N1 - Funding Information: X. Z. wish to thank NSFC (No. 21734001 and 51761165023). W. Y. thanks NSF (DMR-1507249 and CBET-1639429). W. M. thanks the Ministry of Science and Technology of China (2016YFA0200700) and NSFC (21504066 and 21534003). X-ray data was acquired at beamlines 7.3.3 and 11.0.1.2 at the Advanced Light Source, which was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U. S. Department of Energy under Contract No. DE-AC02-05CH11231. The authors thank Chenhui Zhu at beamline 7.3.3, and Cheng Wang at beamline 11.0.1.2 for assistance with data acquisition. Publisher Copyright: © 2018 Royal Society of Chemistry. All rights reserved.

PY - 2018

Y1 - 2018

N2 - We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the substituents on the end-groups on the electronic properties, charge transport, film morphology, and photovoltaic properties of the ITIC-Th series. The electron-withdrawing ability increases from methoxylated to unsubstituted, fluorinated, and difluorinated IC, leading to a downshift of energy levels and a redshift of absorption spectra. Optimized organic solar cells based on the ITIC-Th series show power conversion efficiencies ranging from 8.88% to 12.1%.

AB - We choose the high-performance nonfullerene acceptor ITIC-Th as an example, and incorporate electron-donating methoxy and electron-withdrawing F groups onto the terminal group 1,1-dicyanomethylene-3-indanone (IC) to construct a small library of four fused-ring electron acceptors. With this series, we systematically investigate the effects of the substituents on the end-groups on the electronic properties, charge transport, film morphology, and photovoltaic properties of the ITIC-Th series. The electron-withdrawing ability increases from methoxylated to unsubstituted, fluorinated, and difluorinated IC, leading to a downshift of energy levels and a redshift of absorption spectra. Optimized organic solar cells based on the ITIC-Th series show power conversion efficiencies ranging from 8.88% to 12.1%.

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Enhancing the performance of the electron acceptor ITIC-Th via tailoring its end groups

Abstract

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