Fluoro-benzoselenadiazole-based low band gap polymers for high efficiency organic solar cells

Yongxi Li; Zhe Pan; Lei Miao; Ying Xing; Chao Li; Yu Chen

doi:10.1039/c3py01018j

Fluoro-benzoselenadiazole-based low band gap polymers for high efficiency organic solar cells

Yongxi Li, Zhe Pan, Lei Miao, Ying Xing, Chao Li, Yu Chen

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

26 Citations (Scopus)

Abstract

Low band gap polymers are of great interest for future applications in solar cells. By using monofluoro-2,1,3-benzoselenadiazole (FBSe) as the electron acceptor and benzodithiophene (BDT) or indacenodithiophene (IDT) as the electron donor, two novel FBSe-based polymers, PBDT-T-FBSe and PIDT-T-FBSe, were synthesized via a microwave-assisted palladium-catalyzed Stille polymerization. Both of the polymers exhibited broad absorption and lower highest occupied molecular orbital (HOMO) energy levels, which contribute to the high short current density (J_sc) and open circuit voltage (V_oc). Higher power conversion efficiencies of 5.00% for PBDT-T-FBSe and 4.65% for PIDT-T-FBSe were achieved in a bulk heterojunction (BHJ) photovoltaic device with a configuration of ITO/PEDOT:PSS/polymer:PC₇₁BM/bis-C ₆₀/Ag under the illumination of AM1.5G at 100 mA cm^-2. These results demonstrate the importance of FBSe as an electron-deficient unit in the design of donor-acceptor photovoltaic polymers.

Original language	English
Pages (from-to)	330-334
Number of pages	5
Journal	Polymer Chemistry
Volume	5
Issue number	2
DOIs	https://doi.org/10.1039/c3py01018j
Publication status	Published - 2014 Jan 21
Externally published	Yes

ASJC Scopus subject areas

Bioengineering
Biochemistry
Organic Chemistry
Polymers and Plastics

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title = "Fluoro-benzoselenadiazole-based low band gap polymers for high efficiency organic solar cells",

abstract = "Low band gap polymers are of great interest for future applications in solar cells. By using monofluoro-2,1,3-benzoselenadiazole (FBSe) as the electron acceptor and benzodithiophene (BDT) or indacenodithiophene (IDT) as the electron donor, two novel FBSe-based polymers, PBDT-T-FBSe and PIDT-T-FBSe, were synthesized via a microwave-assisted palladium-catalyzed Stille polymerization. Both of the polymers exhibited broad absorption and lower highest occupied molecular orbital (HOMO) energy levels, which contribute to the high short current density (Jsc) and open circuit voltage (Voc). Higher power conversion efficiencies of 5.00% for PBDT-T-FBSe and 4.65% for PIDT-T-FBSe were achieved in a bulk heterojunction (BHJ) photovoltaic device with a configuration of ITO/PEDOT:PSS/polymer:PC71BM/bis-C 60/Ag under the illumination of AM1.5G at 100 mA cm-2. These results demonstrate the importance of FBSe as an electron-deficient unit in the design of donor-acceptor photovoltaic polymers.",

author = "Yongxi Li and Zhe Pan and Lei Miao and Ying Xing and Chao Li and Yu Chen",

year = "2014",

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T1 - Fluoro-benzoselenadiazole-based low band gap polymers for high efficiency organic solar cells

AU - Li, Yongxi

AU - Pan, Zhe

AU - Miao, Lei

AU - Xing, Ying

AU - Li, Chao

AU - Chen, Yu

PY - 2014/1/21

Y1 - 2014/1/21

N2 - Low band gap polymers are of great interest for future applications in solar cells. By using monofluoro-2,1,3-benzoselenadiazole (FBSe) as the electron acceptor and benzodithiophene (BDT) or indacenodithiophene (IDT) as the electron donor, two novel FBSe-based polymers, PBDT-T-FBSe and PIDT-T-FBSe, were synthesized via a microwave-assisted palladium-catalyzed Stille polymerization. Both of the polymers exhibited broad absorption and lower highest occupied molecular orbital (HOMO) energy levels, which contribute to the high short current density (Jsc) and open circuit voltage (Voc). Higher power conversion efficiencies of 5.00% for PBDT-T-FBSe and 4.65% for PIDT-T-FBSe were achieved in a bulk heterojunction (BHJ) photovoltaic device with a configuration of ITO/PEDOT:PSS/polymer:PC71BM/bis-C 60/Ag under the illumination of AM1.5G at 100 mA cm-2. These results demonstrate the importance of FBSe as an electron-deficient unit in the design of donor-acceptor photovoltaic polymers.

AB - Low band gap polymers are of great interest for future applications in solar cells. By using monofluoro-2,1,3-benzoselenadiazole (FBSe) as the electron acceptor and benzodithiophene (BDT) or indacenodithiophene (IDT) as the electron donor, two novel FBSe-based polymers, PBDT-T-FBSe and PIDT-T-FBSe, were synthesized via a microwave-assisted palladium-catalyzed Stille polymerization. Both of the polymers exhibited broad absorption and lower highest occupied molecular orbital (HOMO) energy levels, which contribute to the high short current density (Jsc) and open circuit voltage (Voc). Higher power conversion efficiencies of 5.00% for PBDT-T-FBSe and 4.65% for PIDT-T-FBSe were achieved in a bulk heterojunction (BHJ) photovoltaic device with a configuration of ITO/PEDOT:PSS/polymer:PC71BM/bis-C 60/Ag under the illumination of AM1.5G at 100 mA cm-2. These results demonstrate the importance of FBSe as an electron-deficient unit in the design of donor-acceptor photovoltaic polymers.

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Fluoro-benzoselenadiazole-based low band gap polymers for high efficiency organic solar cells

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