Cross-linked Triarylamine-Based Hole-Transporting Layer for Solution-Processed PEDOT:PSS-Free Inverted Perovskite Solar Cells

Chia-Chih Chang, Jhih Hao Tao, Che En Tsai, Yen-Ju Cheng*, Chain-Shu Hsu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations

Abstract

The device performance of inverted organic metallohalide perovskite solar cells (OMPSCs) is optimized via tailoring the electrode surfaces with electron- and hole-transporting materials. This work demonstrates the fabrication of PEDOT:PSS-free OMPSCs using a hole-transporting composite material consisting of bilayered vanadium oxide (VOx) and a thermally cross-linked triarylamine-based material X-DVTPD, which contributes to higher Voc and Jsc values. The hydrophobicity of X-DVTPD resulted in the formation of large perovskite crystals and enhanced the stability of OMPSCs. Integration of ionic fullerene derivative, fulleropyrrolidinium iodide, in OMPSCs as a hole-blocking interfacial layer at the interface with Ag proves effective to further boost the device efficiency to 18.08%.

Original languageEnglish
Pages (from-to)21466-21471
Number of pages6
JournalACS Applied Materials and Interfaces
Volume10
Issue number25
DOIs
StatePublished - 27 Jun 2018

Keywords

  • binary electron-transporting layer
  • fulleropyrrolidinium iodide
  • hole-transporting layer
  • inverted perovskite solar cells
  • organic/inorganic hybrid
  • PEDOT:PSS free

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