Dithiafulvenyl unit as a new donor for high-efficiency dye-sensitized solar cells: Synthesis and demonstration of a family of metal-free organic sensitizers

Kunpeng Guo, Keyou Yan, Xiaoqing Lu, Yongcai Qiu, Zhike Liu, Jianwei Sun, Feng Yan, Wenyue Guo, Shihe Yang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

113 Citations (Scopus)


This work identifies the dithiafulvenyl unit as an excellent electron donor for constructing D-π-A-type metal-free organic sensitizers of dye-sensitized solar cells (DSCs). Synthesized and tested are three sensitizers all with this donor and a cyanoacrylic acid acceptor but differing in the phenyl (DTF-C1), biphenyl (DTF-C2), and phenyl-thiopheneyl-phenyl π-bridges (DTF-C3). Devices based on these dyes exhibit a dramatically improved performance with the increasing π-bridge length, culminating with DTF-C3 in η = 8.29% under standard global AM 1.5 illumination.
Original languageEnglish
Pages (from-to)2214-2217
Number of pages4
JournalOrganic Letters
Issue number9
Publication statusPublished - 4 May 2012

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry

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