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

ChemSusChem. 2016 Feb 8;9(3):274-9. doi: 10.1002/cssc.201501392. Epub 2016 Jan 15.

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 1000 h.

Keywords: bimesitylenes; hole-transporting materials; perovskite solar cell; stability; twisted structure.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Benzene Derivatives / chemistry*
  • Calcium Compounds / chemistry*
  • Electric Power Supplies*
  • Electrochemistry
  • Electron Transport
  • Oxides / chemistry*
  • Solar Energy*
  • Titanium / chemistry*

Substances

  • Benzene Derivatives
  • Calcium Compounds
  • Oxides
  • perovskite
  • mesitylene
  • Titanium