Hole-transporting spirothioxanthene derivatives as donor materials for efficient small-molecule-based organic photovoltaic devices

Chin Yiu Chan, Yi Chun Wong, Mei Yee Chan*, Sin Hang CHEUNG, Shu Kong SO, Vivian Wing Wah Yam

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)

Abstract

A new class of hole-transporting spirothioxanthene derivatives has been synthesized and characterized. Their photophysical, electrochemical and thermal properties have been studied. These compounds exhibit high hole mobilities of up to 1 × 10-3 cm2 V-1 s-1, determined by using thin film transistor technique. In addition, these spirothioxanthene derivatives are promising donor materials in the construction of high performance organic photovoltaic (OPV) devices. With a very low dopant concentration of 7%, highly efficient small molecule-based OPV devices with high short-circuit current density of 10.83 mA cm-2, open-circuit voltage of 0.94 V, and high power conversion efficiency of 5.40% (the highest PCE of 5.46%) have been realized.

Original languageEnglish
Pages (from-to)6585-6594
Number of pages10
JournalChemistry of Materials
Volume26
Issue number22
DOIs
Publication statusPublished - 25 Nov 2014

Scopus Subject Areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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