Novel Dimethylmethylene-Bridged Triphenylamine-PDI Acceptor for Bulk-Heterojunction Organic Solar Cells

Yu Xiong; Bo Wu; Xiaoyan Zheng; Zheng Zhao; Ping Deng; Ming Lin; Benzhong Tang; Beng S. Ong

doi:10.1002/advs.201700110

Novel Dimethylmethylene-Bridged Triphenylamine-PDI Acceptor for Bulk-Heterojunction Organic Solar Cells

Yu Xiong, Bo Wu, Xiaoyan Zheng, Zheng Zhao, Ping Deng, Ming Lin, Benzhong Tang, Beng S. Ong^*

^*Corresponding author for this work

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

30 Citations (Scopus)

Abstract

A novel, star-shaped electron acceptor, DMTPA-PDI₃, derived from a planar dimethylmethylene-bridged triphenylamine core with three acetylene-linked perylene diimide (PDI) units is developed as a nonfullerene acceptor for organic solar cells (OSCs). DMTPA-PDI₃ manifests significantly reduced intramolecular twisting, enabling sufficient system-wide π-electron delocalization leading to broadened spectral absorption and raised lowest unoccupied molecular orbital level. As a result, higher and more balanced hole and electron transport properties are observed. Active layers for OSCs comprising DMTPA-PDI₃ acceptor and PBT7-Th donor exhibit suppressed intermolecular aggregation, giving rise to uniform nanophase network formation. These OSC devices have afforded respectably high power-conversion efficiency of about 5%.

Original language	English
Article number	1700110
Journal	Advanced Science
Volume	4
Issue number	10
DOIs	https://doi.org/10.1002/advs.201700110
Publication status	Published - Oct 2017
Externally published	Yes

Keywords

nonfullerene acceptors
organic solar cells
perylene diimide
triphenylamine

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10.1002/advs.201700110

Cite this

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title = "Novel Dimethylmethylene-Bridged Triphenylamine-PDI Acceptor for Bulk-Heterojunction Organic Solar Cells",

abstract = "A novel, star-shaped electron acceptor, DMTPA-PDI3, derived from a planar dimethylmethylene-bridged triphenylamine core with three acetylene-linked perylene diimide (PDI) units is developed as a nonfullerene acceptor for organic solar cells (OSCs). DMTPA-PDI3 manifests significantly reduced intramolecular twisting, enabling sufficient system-wide π-electron delocalization leading to broadened spectral absorption and raised lowest unoccupied molecular orbital level. As a result, higher and more balanced hole and electron transport properties are observed. Active layers for OSCs comprising DMTPA-PDI3 acceptor and PBT7-Th donor exhibit suppressed intermolecular aggregation, giving rise to uniform nanophase network formation. These OSC devices have afforded respectably high power-conversion efficiency of about 5%.",

keywords = "nonfullerene acceptors, organic solar cells, perylene diimide, triphenylamine",

author = "Yu Xiong and Bo Wu and Xiaoyan Zheng and Zheng Zhao and Ping Deng and Ming Lin and Benzhong Tang and Ong, {Beng S.}",

note = "Publisher Copyright: {\textcopyright} 2017 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

year = "2017",

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doi = "10.1002/advs.201700110",

language = "English",

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T1 - Novel Dimethylmethylene-Bridged Triphenylamine-PDI Acceptor for Bulk-Heterojunction Organic Solar Cells

AU - Xiong, Yu

AU - Wu, Bo

AU - Zheng, Xiaoyan

AU - Zhao, Zheng

AU - Deng, Ping

AU - Lin, Ming

AU - Tang, Benzhong

AU - Ong, Beng S.

PY - 2017/10

Y1 - 2017/10

N2 - A novel, star-shaped electron acceptor, DMTPA-PDI3, derived from a planar dimethylmethylene-bridged triphenylamine core with three acetylene-linked perylene diimide (PDI) units is developed as a nonfullerene acceptor for organic solar cells (OSCs). DMTPA-PDI3 manifests significantly reduced intramolecular twisting, enabling sufficient system-wide π-electron delocalization leading to broadened spectral absorption and raised lowest unoccupied molecular orbital level. As a result, higher and more balanced hole and electron transport properties are observed. Active layers for OSCs comprising DMTPA-PDI3 acceptor and PBT7-Th donor exhibit suppressed intermolecular aggregation, giving rise to uniform nanophase network formation. These OSC devices have afforded respectably high power-conversion efficiency of about 5%.

AB - A novel, star-shaped electron acceptor, DMTPA-PDI3, derived from a planar dimethylmethylene-bridged triphenylamine core with three acetylene-linked perylene diimide (PDI) units is developed as a nonfullerene acceptor for organic solar cells (OSCs). DMTPA-PDI3 manifests significantly reduced intramolecular twisting, enabling sufficient system-wide π-electron delocalization leading to broadened spectral absorption and raised lowest unoccupied molecular orbital level. As a result, higher and more balanced hole and electron transport properties are observed. Active layers for OSCs comprising DMTPA-PDI3 acceptor and PBT7-Th donor exhibit suppressed intermolecular aggregation, giving rise to uniform nanophase network formation. These OSC devices have afforded respectably high power-conversion efficiency of about 5%.

KW - nonfullerene acceptors

KW - organic solar cells

KW - perylene diimide

KW - triphenylamine

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DO - 10.1002/advs.201700110

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JO - Advanced Science

JF - Advanced Science

IS - 10

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ER -

Novel Dimethylmethylene-Bridged Triphenylamine-PDI Acceptor for Bulk-Heterojunction Organic Solar Cells

Abstract

Keywords

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