Hole-Transporting Materials Based on Twisted Bimesitylenes for Stable Perovskite Solar Cells with High Efficiency

Yan Duo Lin, Bo Yu Ke, Kun Mu Lee, Sheng Hsiung Chang, Kai Hung Wang, Shih Han Huang, Chun Guey Wu, Po Ting Chou, Samik Jhulki, Jarugu Narasimha Moorthy, Yuan Jay Chang, Kang Ling Liau, Hsin Cheng Chung, Ching Yang Liu, Shih Sheng Sun, Tahsin J. Chow

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

A new class of hole-transport materials (HTMs) based on the bimesitylene core designed for mesoporous perovskite solar cells is introduced. Devices fabricated using two of these derivatives yield higher open-circuit voltage values than the commonly used spiro-OMeTAD. Power conversion efficiency (PCE) values of up to 12.11 % are obtained in perovskite-based devices using these new HTMs. The stability of the device made using the highest performing HTM (P1) is improved compared with spiro-OMeTAD as evidenced through long-term stability tests over 1000h.

Original languageEnglish
Pages (from-to)274-279
Number of pages6
JournalChemSusChem
Volume9
Issue number3
DOIs
StatePublished - 8 Feb 2016

Keywords

  • bimesitylenes
  • hole-transporting materials
  • perovskite solar cell
  • stability
  • twisted structure

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