Influence of Aromatic Heterocycle of Conjugated Side Chains on Photovoltaic Performance of Benzodithiophene-Based Wide-Bandgap Polymers
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- 英文论文题名：Influence of Aromatic Heterocycle of Conjugated Side Chains on Photovoltaic Performance of Benzodithiophene-Based Wide-Bandgap Polymers
- 论文作者：Xiaonan Xue ; Bingbing Fan ; Lijun Huo ; Xiaobo Sun
- 英文论文作者：Xiaonan Xue ; Bingbing Fan ; Lijun Huo ; Xiaobo Sun ; Heeger Beijing Research and Development Center ; School of Chemistry and Environment ; Beihang University
- 年：2016
- 作者机构：Heeger Beijing Research and Development Center,School of Chemistry and Environment,Beihang University;
- 英文论文关键词：BHJ ; polymer solar cell ; BDT ; ring substituents
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十二分会：有机光伏的机遇和挑战
- 语种：英文
- 分类号：O633.5;TM914.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十二分会 ; 有机光伏的机遇和挑战
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：155k
- 原文格式：D
- 会议级别：全国
摘要
Extensive efforts have been focused on the study of wide-band gap(WBG) polymers due to their important application in multiple junction and ternary blend organic solar cells. Herein, three WBG copolymers named PBDT(X)-T1(X = O, S, Se) were synthesized based on benzodithiophene(BDT) donor unit and 1,3-bis(5-bromothiophen-2-yl)-5,7-bis(2-ethylhexyl)-4H,8H-benzo[1,2-c:4,5-c′]dithiophene-4,8-dione(T1) acceptor unit. Different aromatic heterocycle groups(furan, thiophene and selenophene) were used to modify BDT unit to investigate the influence of conjugated side chains on photovoltaic properties of conjugated polymers.. Among them, the PBDT(Se)-T1-based solar cells show the best photovoltaic performance with highest power conversion efficiencies(PCEs) of 8.52%, open-circuit voltage(Voc) of 0.91 V, and high fill factor(FF) of 72%. The results indicate the importance role of chalcogen atoms in conjugated side chains and high photovoltaic performance can be realized through side chain engineering of BDT-based WBG conjugated polymers~1.
Extensive efforts have been focused on the study of wide-band gap(WBG) polymers due to their important application in multiple junction and ternary blend organic solar cells. Herein, three WBG copolymers named PBDT(X)-T1(X = O, S, Se) were synthesized based on benzodithiophene(BDT) donor unit and 1,3-bis(5-bromothiophen-2-yl)-5,7-bis(2-ethylhexyl)-4H,8H-benzo[1,2-c:4,5-c′]dithiophene-4,8-dione(T1) acceptor unit. Different aromatic heterocycle groups(furan, thiophene and selenophene) were used to modify BDT unit to investigate the influence of conjugated side chains on photovoltaic properties of conjugated polymers.. Among them, the PBDT(Se)-T1-based solar cells show the best photovoltaic performance with highest power conversion efficiencies(PCEs) of 8.52%, open-circuit voltage(Voc) of 0.91 V, and high fill factor(FF) of 72%. The results indicate the importance role of chalcogen atoms in conjugated side chains and high photovoltaic performance can be realized through side chain engineering of BDT-based WBG conjugated polymers~1.
Extensive efforts have been focused on the study of wide-band gap(WBG) polymers due to their important application in multiple junction and ternary blend organic solar cells. Herein, three WBG copolymers named PBDT(X)-T1(X = O, S, Se) were synthesized based on benzodithiophene(BDT) donor unit and 1,3-bis(5-bromothiophen-2-yl)-5,7-bis(2-ethylhexyl)-4H,8H-benzo[1,2-c:4,5-c′]dithiophene-4,8-dione(T1) acceptor unit. Different aromatic heterocycle groups(furan, thiophene and selenophene) were used to modify BDT unit to investigate the influence of conjugated side chains on photovoltaic properties of conjugated polymers.. Among them, the PBDT(Se)-T1-based solar cells show the best photovoltaic performance with highest power conversion efficiencies(PCEs) of 8.52%, open-circuit voltage(Voc) of 0.91 V, and high fill factor(FF) of 72%. The results indicate the importance role of chalcogen atoms in conjugated side chains and high photovoltaic performance can be realized through side chain engineering of BDT-based WBG conjugated polymers~1.
引文
[1]Warnan J,El Labban A,Cabanetos C,et al.Chem Mater.2014,26:2299.