Improvement of photovoltaic properties of benzo[1,2-b:4,5-b′]difuran-conjugated polymer by side-chain modification

Yun Li; Guangkai Lu; Linglong Ye; Hwa Sook Ryu; Yunhao Cai; Han Young Woo; Yan Li; Yanming Sun

doi:10.1016/j.chphma.2022.09.005

Improvement of photovoltaic properties of benzo[1,2-b:4,5-b′]difuran-conjugated polymer by side-chain modification

Yun Li, Guangkai Lu, Linglong Ye, Hwa Sook Ryu, Yunhao Cai, Han Young Woo, Yan Li, Yanming Sun

Department of Chemistry

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

Abstract

The development of polymer solar cells (PSCs) for the donor materials based on benzo[1,2-b:4,5-b′]dithiophene (BDT) has significantly boosted the power conversion efficiency (PCE). However, the PCE of polymer donor materials for benzo[1,2-b:4,5-b′]difuran (BDF)-based lags far behind that of their BDT analogs. To further explore efficient copolymers based on BDF units, a two-dimensional (2D) side-chain strategy was proposed to investigate the atom-changing effects on the copolymer donors for the properties of electron and optical. In this study, we designed and synthesized three new BDF-based copolymer donor materials, named PBDF-C, PBDF-O, and PBDF-S. Owing to the balanced charge transport and favorable phase separation of PBDF-S:Y6, a high PCE of 13.4%, a short-circuit current (J_sc) of 25.48 mA cm⁻², an open-circuit voltage (V_oc) of 0.721 V, and a fill factor (FF) of 72.6% was obtained. This research demonstrates that the BDF building block has great potential for constructing conjugated copolymer donors for high-performance PSCs and that 2D side-chain modification is a facile approach for designing high-performance BDF-based copolymer materials.

Original language	English
Pages (from-to)	225-230
Number of pages	6
Journal	ChemPhysMater
Volume	2
Issue number	3
DOIs	https://doi.org/10.1016/j.chphma.2022.09.005
Publication status	Published - 2023 Jul

Bibliographical note

Publisher Copyright:
© 2022

Keywords

Benzodifuran
Efficiency
Polymer donor
Polymer solar cells
Side-chain modification

ASJC Scopus subject areas

Condensed Matter Physics
Chemistry(all)
Materials Science(all)

UN SDGs

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

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10.1016/j.chphma.2022.09.005

Cite this

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title = "Improvement of photovoltaic properties of benzo[1,2-b:4,5-b′]difuran-conjugated polymer by side-chain modification",

abstract = "The development of polymer solar cells (PSCs) for the donor materials based on benzo[1,2-b:4,5-b′]dithiophene (BDT) has significantly boosted the power conversion efficiency (PCE). However, the PCE of polymer donor materials for benzo[1,2-b:4,5-b′]difuran (BDF)-based lags far behind that of their BDT analogs. To further explore efficient copolymers based on BDF units, a two-dimensional (2D) side-chain strategy was proposed to investigate the atom-changing effects on the copolymer donors for the properties of electron and optical. In this study, we designed and synthesized three new BDF-based copolymer donor materials, named PBDF-C, PBDF-O, and PBDF-S. Owing to the balanced charge transport and favorable phase separation of PBDF-S:Y6, a high PCE of 13.4%, a short-circuit current (Jsc) of 25.48 mA cm−2, an open-circuit voltage (Voc) of 0.721 V, and a fill factor (FF) of 72.6% was obtained. This research demonstrates that the BDF building block has great potential for constructing conjugated copolymer donors for high-performance PSCs and that 2D side-chain modification is a facile approach for designing high-performance BDF-based copolymer materials.",

keywords = "Benzodifuran, Efficiency, Polymer donor, Polymer solar cells, Side-chain modification",

author = "Yun Li and Guangkai Lu and Linglong Ye and Ryu, {Hwa Sook} and Yunhao Cai and Woo, {Han Young} and Yan Li and Yanming Sun",

note = "Publisher Copyright: {\textcopyright} 2022",

year = "2023",

month = jul,

doi = "10.1016/j.chphma.2022.09.005",

language = "English",

volume = "2",

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TY - JOUR

T1 - Improvement of photovoltaic properties of benzo[1,2-b:4,5-b′]difuran-conjugated polymer by side-chain modification

AU - Li, Yun

AU - Lu, Guangkai

AU - Ye, Linglong

AU - Ryu, Hwa Sook

AU - Cai, Yunhao

AU - Woo, Han Young

AU - Li, Yan

AU - Sun, Yanming

PY - 2023/7

Y1 - 2023/7

N2 - The development of polymer solar cells (PSCs) for the donor materials based on benzo[1,2-b:4,5-b′]dithiophene (BDT) has significantly boosted the power conversion efficiency (PCE). However, the PCE of polymer donor materials for benzo[1,2-b:4,5-b′]difuran (BDF)-based lags far behind that of their BDT analogs. To further explore efficient copolymers based on BDF units, a two-dimensional (2D) side-chain strategy was proposed to investigate the atom-changing effects on the copolymer donors for the properties of electron and optical. In this study, we designed and synthesized three new BDF-based copolymer donor materials, named PBDF-C, PBDF-O, and PBDF-S. Owing to the balanced charge transport and favorable phase separation of PBDF-S:Y6, a high PCE of 13.4%, a short-circuit current (Jsc) of 25.48 mA cm−2, an open-circuit voltage (Voc) of 0.721 V, and a fill factor (FF) of 72.6% was obtained. This research demonstrates that the BDF building block has great potential for constructing conjugated copolymer donors for high-performance PSCs and that 2D side-chain modification is a facile approach for designing high-performance BDF-based copolymer materials.

AB - The development of polymer solar cells (PSCs) for the donor materials based on benzo[1,2-b:4,5-b′]dithiophene (BDT) has significantly boosted the power conversion efficiency (PCE). However, the PCE of polymer donor materials for benzo[1,2-b:4,5-b′]difuran (BDF)-based lags far behind that of their BDT analogs. To further explore efficient copolymers based on BDF units, a two-dimensional (2D) side-chain strategy was proposed to investigate the atom-changing effects on the copolymer donors for the properties of electron and optical. In this study, we designed and synthesized three new BDF-based copolymer donor materials, named PBDF-C, PBDF-O, and PBDF-S. Owing to the balanced charge transport and favorable phase separation of PBDF-S:Y6, a high PCE of 13.4%, a short-circuit current (Jsc) of 25.48 mA cm−2, an open-circuit voltage (Voc) of 0.721 V, and a fill factor (FF) of 72.6% was obtained. This research demonstrates that the BDF building block has great potential for constructing conjugated copolymer donors for high-performance PSCs and that 2D side-chain modification is a facile approach for designing high-performance BDF-based copolymer materials.

KW - Benzodifuran

KW - Efficiency

KW - Polymer donor

KW - Polymer solar cells

KW - Side-chain modification

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SN - 2772-5715

VL - 2

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JO - ChemPhysMater

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ER -

Improvement of photovoltaic properties of benzo[1,2-b:4,5-b′]difuran-conjugated polymer by side-chain modification

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

UN SDGs

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