A copper-doped nickel oxide bilayer for enhancing efficiency and stability of hysteresis-free inverted mesoporous perovskite solar cells

Kai Yao, Fan Li, Qiqi He, Xiaofeng Wang, Yihua Jiang, Haitao Huang, Alex K.Y. Jen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

100 Citations (Scopus)


For developing inverted mesoporous perovskite solar cells and the future design of tandem devices, a p-type metal oxide with high surface area and good charge carrier mobility is of paramount importance. Here, we develop a bilayer structure of p-type Cu:NiOxnanoparticle-based mesoporous and Cu-doped NiOxblocking layers to achieve efficient charge collection at the NiOx/perovskite interface with minimized recombination loss. Our strategy enables the fabrication of centimeter-sized perovskite solar cells with a decent efficiency of 18.1%, significantly improved stability, and negligible hysteresis. The rational design of the p-type Cu-doped metal oxide bilayer provides an effective strategy for future development of inverted architecture based mesoporous solar cells.
Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalNano Energy
Publication statusPublished - 1 Oct 2017


  • Hysteresis-free
  • Mesoporous NiO x
  • Metal doping
  • Perovskite solar cells
  • Stability

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Electrical and Electronic Engineering

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