Panchromatic terthiophenyl-benzodithiophene conjugated porphyrin donor for efficient organic solar cells

Wei Tang, Liuping Xie, Zhixin Liu, Jie Zeng, Xuan Zhou*, Pengqing Bi, Wencheng Tang, Lei Yan*, Wai Kwok Wong, Xunjin Zhu*, Xiaotao Hao*, Weiguo Zhu*, Xingzhu Wang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Two intermediate-sized acceptor–π–porphyrin–π–acceptor-type molecules MPor1 and MPor2 with panchromatic absorption profiles have been developed towards improving photovoltaic performance. The conjugation of terthiophenyl-benzodithiophene to the porphyrin center successfully fills the absorption gap between the Soret and Q bands of the conventional porphyrin molecules and leads to narrow optical bandgaps within 1.58–1.60 eV. The two molecules possess excellent light-harvesting property within the UV-visible-near-infrared region, and efficient hole-electron separation in the bulk heterojunction layer with PC71BM as the acceptor. Conventional solar cells based on the MPor1/PC71BM active layer shows an optimal performance with a power conversion efficiency of 8.59% and a short circle current of 14.91 mA cm−2.

Original languageEnglish
Pages (from-to)1077-1083
Number of pages7
JournalJournal of Materials Chemistry C
Volume10
Issue number3
Early online date1 Nov 2021
DOIs
Publication statusPublished - 21 Jan 2022

Scopus Subject Areas

  • Materials Chemistry
  • Chemistry(all)

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