In situ deposition of black α-FAPbI3 films by vacuum flash evaporation for solar cells

  • Fuzong Xu
  • Yongshang Tian
  • Wenzhen Wang
  • Yanyan Zhu
  • Liya Zeng
  • Bo Yao
  • Zebo Fang
  • Haitao XuEmail author
  • Run XuEmail author
  • Fei XuEmail author
  • Feng Hong
  • Linjun Wang


Formamidinium lead iodide (FAPbI3) is a promising candidate as the solar cell absorption layer with a suitable band gap of 1.45 eV and excellent optoelectronic properties. In this work, we report a new vacuum flash evaporation method to deposit phase-pure black α-FAPbI3 films in situ on low-temperature substrates without post-annealing, and the area of deposited films can be up to 36 cm2 (6 cm × 6 cm). Besides, the unique relationship between substrate temperature and phases in films is demonstrated for the further development of the method. With the α-FAPbI3 films as the active layer, perovskite solar cells with power conversion efficiency of 12.55% are fabricated.



This work was supported by the National Natural Science Foundation of China (Grant Nos. 51872186 and 51672172), the Zhejiang Provincial Natural Science Foundation (Grant No. LQ19F040002), and the Scientific and Technical Plan Project of Shaoxing City (Grant No. 2017B70063). The authors also thank Instrumental Analysis and Research Center of Shanghai University for XRD and SEM measurement.


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© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of PhysicsShaoxing UniversityShaoxingChina
  2. 2.School of Materials Science and EngineeringShanghai UniversityShanghaiChina
  3. 3.SHU-Solar E R&D Lab, Department of Physics, Shanghai Key Laboratory of High Temperature SuperconductorsShanghai UniversityShanghaiChina

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