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Issue 16, 2016
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Indacenodithienothiophene–naphthalene diimide copolymer as an acceptor for all-polymer solar cells

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Abstract

An alternating copolymer (P(IDT-NDI)) containing indacenodithienothiophene (IDT) and naphthalene diimide (NDI) units was synthesized for application as an acceptor material in all-polymer solar cells (all-PSCs). The polymer possesses a low bandgap of 1.51 eV, a suitable LUMO level of −3.84 eV and a HOMO level of −5.75 eV for use as an acceptor material instead of PCBM. Three conjugated polymers including J50 and J51 with a medium bandgap (ca. 1.9 eV) and PTB7-Th with a low bandgap (1.59 eV) were selected as donor materials for the investigation of the photovoltaic performance of the nonfullerene acceptor P(IDT-NDI). The champion all-PSCs with P(IDT-NDI) as an acceptor demonstrated power conversion efficiencies of 3.63%, 4.12% and 5.33% for the polymer donors PTB7-Th, J50 and J51, respectively. The results indicate that the complementary absorption of the polymer donor with polymer acceptor is very important for high performance all-PSCs and P(IDT-NDI) is a promising polymer acceptor for all-PSCs.

Graphical abstract: Indacenodithienothiophene–naphthalene diimide copolymer as an acceptor for all-polymer solar cells

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Supplementary files

Article information


Submitted
05 Mar 2016
Accepted
16 Mar 2016
First published
17 Mar 2016

J. Mater. Chem. A, 2016,4, 5810-5816
Article type
Communication

Indacenodithienothiophene–naphthalene diimide copolymer as an acceptor for all-polymer solar cells

L. Xue, Y. Yang, Z. Zhang, X. Dong, L. Gao, H. Bin, J. Zhang, Y. Yang and Y. Li, J. Mater. Chem. A, 2016, 4, 5810
DOI: 10.1039/C6TA01933A

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