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Electronic Materials Letters

, Volume 15, Issue 1, pp 56–60 | Cite as

All-Inorganic Perovskite CsPbI2Br Through Co-evaporation for Planar Heterojunction Solar Cells

  • Chan-Gyu Park
  • Won-Gyu Choi
  • Sungjae Na
  • Taeho MoonEmail author
Original Article - Energy and Sustainability
  • 167 Downloads

Abstract

All-inorganic perovskite CsPbI2Br thin films are formed by the dual-source thermal evaporation of CsBr and PbI2. The resultant perovskite layers possess a uniform and dense microstructure with a bandgap of 1.97 eV. Planar heterojunction perovskite solar cells are fabricated using TiO2 and spiro-OMeTAD charge-transporting layers in the regular n-i-p form. The devices exhibit a best efficiency of 5.7%. Thermal stability evaluation is performed at 85 °C under atmosphere, and ~ 85% of the initial efficiency is maintained after 24 h.

Graphical Abstract

Keywords

All-inorganic perovskite CsPbI2Br Co-evaporation Thermal stability Planar heterojunction solar cells 

Notes

Acknowledgements

This research was supported by the Leading Human Resource Training Program of Regional Neo Industry (2016H1D5A1910305) and Basic Science Research Program (2017R1D1A1A02017758) through the National Research Foundation of Korea (NRF). The present research was conducted by the research fund of Dankook University in 2017.

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Copyright information

© The Korean Institute of Metals and Materials 2018

Authors and Affiliations

  • Chan-Gyu Park
    • 1
  • Won-Gyu Choi
    • 1
  • Sungjae Na
    • 1
  • Taeho Moon
    • 1
    Email author
  1. 1.Department of Materials Science and EngineeringDankook UniversityCheonanKorea

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