Phenylalkylamine Passivation of Organolead Halide Perovskites Enabling High‐Efficiency and Air‐Stable Photovoltaic Cells

Benzylamine is introduced as a surface passivation molecule that improves the moisture-resistance of the perovskites while simultaneously enhancing their electronic properties. Solar cells based on benzylamine-modified formamidinium lead iodide perovskite films exhibit a champion efficiency of 19.2% and an open-circuit voltage of 1.12 V. The modified FAPbI3 films exhibit no degradation after >2800 h air exposure. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than…

• NN
  National Natural Science Foundation of China

  Awards: 51572016 and U1530401, No. 51572016, U1530401, 51572016, 2016YFB0700700
• MO
  Ministry of Science and Technology of the People's Republic of China

  Award: 2016YFB0700700
• CU
  Chinese University of Hong Kong

  Award: VCF2014016