Substituent effects on physical and photovoltaic properties of 5,6-difluorobenzo[ c ][1,2,5]thiadiazole-based D-A polymers: Toward a donor design for high performance polymer solar cells

Yan Wang; Xin Xin; Yong Lu; Ting Xiao; Xiaofeng Xu; Ni Zhao; Xiao Hu; Beng S. Ong; Siu Choon Ng

doi:10.1021/ma401709r

Substituent effects on physical and photovoltaic properties of 5,6-difluorobenzo[ c ][1,2,5]thiadiazole-based D-A polymers: Toward a donor design for high performance polymer solar cells

Yan Wang, Xin Xin, Yong Lu, Ting Xiao, Xiaofeng Xu, Ni Zhao, Xiao Hu^*, Beng S. Ong, Siu Choon Ng

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

51 Citations (Scopus)

Abstract

5,6-Difluorobenzo[c][1,2,5]thiadiazole (FBT)-based conjugated donor-acceptor (D-A) polymers with straight and branched side chains were synthesized via Stille-coupling copolymerization to study their physical, optoelectronic and photovoltaic properties. The results show that both the nature of pendant side chains and the electron acceptor strength of the acceptor moiety of D-A polymers have critical impacts on material and photovoltaic properties. Better π-π stacking of polymer backbones enabled by appropriate substituents such as fluorine atoms and branched alkyl chains leads to a reasonably high power conversion efficiency of over 6% when the polymer is utilized as a donor material with PC71BM as an active layer in bulk heterojunction solar cells.

Original language	English
Pages (from-to)	9587-9592
Number of pages	6
Journal	Macromolecules
Volume	46
Issue number	24
DOIs	https://doi.org/10.1021/ma401709r
Publication status	Published - 23 Dec 2013

Scopus Subject Areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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@article{a8f7151f6a9b44918a0216ce2ffa44fb,

title = "Substituent effects on physical and photovoltaic properties of 5,6-difluorobenzo[ c ][1,2,5]thiadiazole-based D-A polymers: Toward a donor design for high performance polymer solar cells",

abstract = "5,6-Difluorobenzo[c][1,2,5]thiadiazole (FBT)-based conjugated donor-acceptor (D-A) polymers with straight and branched side chains were synthesized via Stille-coupling copolymerization to study their physical, optoelectronic and photovoltaic properties. The results show that both the nature of pendant side chains and the electron acceptor strength of the acceptor moiety of D-A polymers have critical impacts on material and photovoltaic properties. Better π-π stacking of polymer backbones enabled by appropriate substituents such as fluorine atoms and branched alkyl chains leads to a reasonably high power conversion efficiency of over 6% when the polymer is utilized as a donor material with PC71BM as an active layer in bulk heterojunction solar cells.",

author = "Yan Wang and Xin Xin and Yong Lu and Ting Xiao and Xiaofeng Xu and Ni Zhao and Xiao Hu and Ong, {Beng S.} and Ng, {Siu Choon}",

note = "The authors are grateful to thank A*STAR, Singapore for providing financial support (Grant No. 102 170 0135). ",

year = "2013",

month = dec,

day = "23",

doi = "10.1021/ma401709r",

language = "English",

volume = "46",

pages = "9587--9592",

journal = "Macromolecules",

issn = "0024-9297",

publisher = "American Chemical Society",

number = "24",

}

TY - JOUR

T1 - Substituent effects on physical and photovoltaic properties of 5,6-difluorobenzo[ c ][1,2,5]thiadiazole-based D-A polymers

T2 - Toward a donor design for high performance polymer solar cells

AU - Wang, Yan

AU - Xin, Xin

AU - Lu, Yong

AU - Xiao, Ting

AU - Xu, Xiaofeng

AU - Zhao, Ni

AU - Hu, Xiao

AU - Ong, Beng S.

AU - Ng, Siu Choon

N1 - The authors are grateful to thank A*STAR, Singapore for providing financial support (Grant No. 102 170 0135).

PY - 2013/12/23

Y1 - 2013/12/23

N2 - 5,6-Difluorobenzo[c][1,2,5]thiadiazole (FBT)-based conjugated donor-acceptor (D-A) polymers with straight and branched side chains were synthesized via Stille-coupling copolymerization to study their physical, optoelectronic and photovoltaic properties. The results show that both the nature of pendant side chains and the electron acceptor strength of the acceptor moiety of D-A polymers have critical impacts on material and photovoltaic properties. Better π-π stacking of polymer backbones enabled by appropriate substituents such as fluorine atoms and branched alkyl chains leads to a reasonably high power conversion efficiency of over 6% when the polymer is utilized as a donor material with PC71BM as an active layer in bulk heterojunction solar cells.

AB - 5,6-Difluorobenzo[c][1,2,5]thiadiazole (FBT)-based conjugated donor-acceptor (D-A) polymers with straight and branched side chains were synthesized via Stille-coupling copolymerization to study their physical, optoelectronic and photovoltaic properties. The results show that both the nature of pendant side chains and the electron acceptor strength of the acceptor moiety of D-A polymers have critical impacts on material and photovoltaic properties. Better π-π stacking of polymer backbones enabled by appropriate substituents such as fluorine atoms and branched alkyl chains leads to a reasonably high power conversion efficiency of over 6% when the polymer is utilized as a donor material with PC71BM as an active layer in bulk heterojunction solar cells.

UR - http://www.scopus.com/inward/record.url?scp=84897687232&partnerID=8YFLogxK

U2 - 10.1021/ma401709r

DO - 10.1021/ma401709r

M3 - Journal article

AN - SCOPUS:84897687232

SN - 0024-9297

VL - 46

SP - 9587

EP - 9592

JO - Macromolecules

JF - Macromolecules

IS - 24

ER -

Substituent effects on physical and photovoltaic properties of 5,6-difluorobenzo[ c ][1,2,5]thiadiazole-based D-A polymers: Toward a donor design for high performance polymer solar cells

Abstract

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