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Inorganic hole conductor-based lead halide perovskite solar cells with 12.4% conversion efficiency

Author

Listed:
  • Peng Qin

    (Laboratory of Photonics and Interfaces, Swiss Federal Institute of Technology)

  • Soichiro Tanaka

    (Graduate School of Engineering, University of Hyogo)

  • Seigo Ito

    (Graduate School of Engineering, University of Hyogo)

  • Nicolas Tetreault

    (Laboratory of Photonics and Interfaces, Swiss Federal Institute of Technology)

  • Kyohei Manabe

    (Energy Technology Laboratories, Osaka Gas Co., Ltd.)

  • Hitoshi Nishino

    (Energy Technology Laboratories, Osaka Gas Co., Ltd.)

  • Mohammad Khaja Nazeeruddin

    (Laboratory of Photonics and Interfaces, Swiss Federal Institute of Technology)

  • Michael Grätzel

    (Laboratory of Photonics and Interfaces, Swiss Federal Institute of Technology)

Abstract

Organo-lead halide perovskites have attracted much attention for solar cell applications due to their unique optical and electrical properties. With either low-temperature solution processing or vacuum evaporation, the overall conversion efficiencies of perovskite solar cells with organic hole-transporting material were quickly improved to over 15% during the last 2 years. However, the organic hole-transporting materials used are normally quite expensive due to complicated synthetic procedure or high-purity requirement. Here, we demonstrate the application of an effective and cheap inorganic p-type hole-transporting material, copper thiocyanate, on lead halide perovskite-based devices. With low-temperature solution-process deposition method, a power conversion efficiency of 12.4% was achieved under full sun illumination. This work represents a well-defined cell configuration with optimized perovskite morphology by two times of lead iodide deposition, and opens the door for integration of a class of abundant and inexpensive material for photovoltaic application.

Suggested Citation

  • Peng Qin & Soichiro Tanaka & Seigo Ito & Nicolas Tetreault & Kyohei Manabe & Hitoshi Nishino & Mohammad Khaja Nazeeruddin & Michael Grätzel, 2014. "Inorganic hole conductor-based lead halide perovskite solar cells with 12.4% conversion efficiency," Nature Communications, Nature, vol. 5(1), pages 1-6, September.
    • Handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms4834
    DOI: 10.1038/ncomms4834
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