Jump to main content
Jump to site search

Issue 37, 2017
Previous Article Next Article

Efficient non-fullerene polymer solar cells based on a wide bandgap polymer of meta-alkoxy-phenyl-substituted benzodithiophene and difluorobenzotriazole

Author affiliations

Abstract

A new conjugated polymer (PBFZ-OP) based on meta-alkoxy-phenyl-substituted benzodithiophene (BDT-m-OP) and difluorobenzotriazole (FBTZ) was designed and synthesized for application as a donor material in non-fullerene polymer solar cells (PSCs). The polymer exhibits a strong absorption in the range of 300–620 nm with a wide bandgap of 1.99 eV, which is complementary to that of the small molecule acceptor ITIC. Meanwhile, it also possesses a deeper HOMO energy level of −5.33 eV and a higher hole mobility of 7.28 × 10−4 cm2 V−1 s−1. The PSCs based on PBFZ-OP:ITIC showed a higher power conversion efficiency (PCE) of 10.5% with a Voc of 0.91 V, Jsc of 18.7 mA cm−2, and FF of 61.8% in comparison with the PCE of 5.5% with a Voc of 0.73 V, Jsc of 13.1 mA cm−2, and FF of 57.8% for J52-based PSCs. The results indicate that PBFZ-OP is a promising wide bandgap polymer donor for the photovoltaic application in non-fullerene PSCs.

Graphical abstract: Efficient non-fullerene polymer solar cells based on a wide bandgap polymer of meta-alkoxy-phenyl-substituted benzodithiophene and difluorobenzotriazole

Back to tab navigation

Supplementary files

Publication details

The article was received on 24 Jul 2017, accepted on 21 Aug 2017 and first published on 22 Aug 2017


Article type: Paper
DOI: 10.1039/C7TA06476D
Citation: J. Mater. Chem. A, 2017,5, 19680-19686
  •   Request permissions

    Efficient non-fullerene polymer solar cells based on a wide bandgap polymer of meta-alkoxy-phenyl-substituted benzodithiophene and difluorobenzotriazole

    W. Li, G. Li, X. Guo, B. Guo, Z. Bi, H. Guo, W. Ma, X. Ou, M. Zhang and Y. Li, J. Mater. Chem. A, 2017, 5, 19680
    DOI: 10.1039/C7TA06476D

Search articles by author

Spotlight

Advertisements