Chlorination Enabling a Low-Cost Benzodithiophene-Based Wide-Bandgap Donor Polymer with an Efficiency of over 17%

Hang Wang; Hao Lu; Ya Nan Chen; Guangliu Ran; Andong Zhang; Dawei Li; Na Yu; Zhe Zhang; Yahui Liu; Xinjun Xu; Wenkai Zhang; Qinye Bao; Zheng Tang; Zhishan Bo

doi:10.1002/adma.202105483

Chlorination Enabling a Low-Cost Benzodithiophene-Based Wide-Bandgap Donor Polymer with an Efficiency of over 17%

Hang Wang, Hao Lu, Ya Nan Chen, Guangliu Ran, Andong Zhang, Dawei Li, Na Yu, Zhe Zhang, Yahui Liu^*, Xinjun Xu^*, Wenkai Zhang, Qinye Bao, Zheng Tang, Zhishan Bo^*

^*Corresponding author for this work

School of Physics and Electronic Science

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

78 Scopus citations

Abstract

Three regioregular benzodithiophene-based donor–donor (D–D)-type polymers (PBDTT, PBDTT1Cl, and PBDTT2Cl) are designed, synthesized, and used as donor materials in organic solar cells (OSCs). Because of the weak intramolecular charge-transfer effect, these polymers exhibit large optical bandgaps (>2.0 eV). Among these three polymers, PBDTT1Cl exhibits more ordered and closer molecular stacking, and its devices demonstrate higher and more balanced charge mobilities and a longer charge-separated state lifetime. As a result of these comprehensive benefits, PBDTT1Cl-based OSCs give a very impressive power conversion efficiency (PCE) of 17.10% with a low nonradiative energy loss (0.19 eV). Moreover, PBDTT1Cl also possesses a low figure-of-merit value and good universality to match with different acceptors. This work provides a simply and efficient strategy to design low-cost high-performance polymer donor materials.

Original language	English
Article number	2105483
Journal	Advanced Materials
Volume	34
Issue number	4
DOIs	https://doi.org/10.1002/adma.202105483
State	Published - 27 Jan 2022

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@article{561c1902de9e4a9d803706a3f123d98e,

title = "Chlorination Enabling a Low-Cost Benzodithiophene-Based Wide-Bandgap Donor Polymer with an Efficiency of over 17\%",

abstract = "Three regioregular benzodithiophene-based donor–donor (D–D)-type polymers (PBDTT, PBDTT1Cl, and PBDTT2Cl) are designed, synthesized, and used as donor materials in organic solar cells (OSCs). Because of the weak intramolecular charge-transfer effect, these polymers exhibit large optical bandgaps (>2.0 eV). Among these three polymers, PBDTT1Cl exhibits more ordered and closer molecular stacking, and its devices demonstrate higher and more balanced charge mobilities and a longer charge-separated state lifetime. As a result of these comprehensive benefits, PBDTT1Cl-based OSCs give a very impressive power conversion efficiency (PCE) of 17.10\% with a low nonradiative energy loss (0.19 eV). Moreover, PBDTT1Cl also possesses a low figure-of-merit value and good universality to match with different acceptors. This work provides a simply and efficient strategy to design low-cost high-performance polymer donor materials.",

author = "Hang Wang and Hao Lu and Chen, \{Ya Nan\} and Guangliu Ran and Andong Zhang and Dawei Li and Na Yu and Zhe Zhang and Yahui Liu and Xinjun Xu and Wenkai Zhang and Qinye Bao and Zheng Tang and Zhishan Bo",

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year = "2022",

month = jan,

day = "27",

doi = "10.1002/adma.202105483",

language = "英语",

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journal = "Advanced Materials",

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T1 - Chlorination Enabling a Low-Cost Benzodithiophene-Based Wide-Bandgap Donor Polymer with an Efficiency of over 17%

AU - Wang, Hang

AU - Lu, Hao

AU - Chen, Ya Nan

AU - Ran, Guangliu

AU - Zhang, Andong

AU - Li, Dawei

AU - Yu, Na

AU - Zhang, Zhe

AU - Liu, Yahui

AU - Xu, Xinjun

AU - Zhang, Wenkai

AU - Bao, Qinye

AU - Tang, Zheng

AU - Bo, Zhishan

PY - 2022/1/27

Y1 - 2022/1/27

N2 - Three regioregular benzodithiophene-based donor–donor (D–D)-type polymers (PBDTT, PBDTT1Cl, and PBDTT2Cl) are designed, synthesized, and used as donor materials in organic solar cells (OSCs). Because of the weak intramolecular charge-transfer effect, these polymers exhibit large optical bandgaps (>2.0 eV). Among these three polymers, PBDTT1Cl exhibits more ordered and closer molecular stacking, and its devices demonstrate higher and more balanced charge mobilities and a longer charge-separated state lifetime. As a result of these comprehensive benefits, PBDTT1Cl-based OSCs give a very impressive power conversion efficiency (PCE) of 17.10% with a low nonradiative energy loss (0.19 eV). Moreover, PBDTT1Cl also possesses a low figure-of-merit value and good universality to match with different acceptors. This work provides a simply and efficient strategy to design low-cost high-performance polymer donor materials.

AB - Three regioregular benzodithiophene-based donor–donor (D–D)-type polymers (PBDTT, PBDTT1Cl, and PBDTT2Cl) are designed, synthesized, and used as donor materials in organic solar cells (OSCs). Because of the weak intramolecular charge-transfer effect, these polymers exhibit large optical bandgaps (>2.0 eV). Among these three polymers, PBDTT1Cl exhibits more ordered and closer molecular stacking, and its devices demonstrate higher and more balanced charge mobilities and a longer charge-separated state lifetime. As a result of these comprehensive benefits, PBDTT1Cl-based OSCs give a very impressive power conversion efficiency (PCE) of 17.10% with a low nonradiative energy loss (0.19 eV). Moreover, PBDTT1Cl also possesses a low figure-of-merit value and good universality to match with different acceptors. This work provides a simply and efficient strategy to design low-cost high-performance polymer donor materials.

UR - https://www.scopus.com/pages/publications/85120898100

U2 - 10.1002/adma.202105483

DO - 10.1002/adma.202105483

M3 - 文章

C2 - 34773717

AN - SCOPUS:85120898100

SN - 0935-9648

VL - 34

JO - Advanced Materials

JF - Advanced Materials

IS - 4

M1 - 2105483

ER -

Chlorination Enabling a Low-Cost Benzodithiophene-Based Wide-Bandgap Donor Polymer with an Efficiency of over 17%

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