Platinum(II)-containing donor-acceptor dimesitylborane-based complexes: Synthesis, characterization, photophysical and photovoltaic properties

Qian Liu, Cong Wang, Chenguang Hu, Min Wang, Chao Li, Zengqi Guo, Yujing Liu, Wai Yeung Wong

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

A new series of platinum(II)-containing donor-acceptor (D-A) dimesitylborane-based complexes PT1−PT4 have been successfully synthesized in reasonable yields. The photophysical and electrochemical properties have also been investigated. Complexes PT1−PT4 have narrow energy bandgaps within 1.69−1.74 eV and broad absorption bands within 240−700 nm, which would be suitable candidates for the fabrication of devices in bulk heterojunction (BHJ) solar cells. The devices based on PT4, which has the longest π-conjugated framework, showed the highest PCE of 3.07% among all the devices with high open-circuit voltage (Voc) of 0.92 V, short-circuit photocurrent density (Jsc) of 7.95 mA cm−2 and fill factor (FF) of 0.42 at the optimized active layer thickness of 85 nm. These complexes illustrate the potential of solution-processible metallo-organic D-A complexes for efficient power generation in photovoltaic implementation.

Original languageEnglish
Article number122220
JournalJournal of Organometallic Chemistry
Volume960
DOIs
Publication statusPublished - 15 Feb 2022

Keywords

  • BHJ solar cells
  • Dimesitylborane
  • Narrow bandgaps
  • Photovoltaics
  • Platinum

ASJC Scopus subject areas

  • Biochemistry
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Materials Chemistry

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