Lead-Free Inverted Planar Formamidinium Tin Triiodide Perovskite Solar Cells Achieving Power Conversion Efficiencies up to 6.22%

Kai Zhu, Weiqiang Liao, Dewei Zhao, Yue Yu, Corey Grice, Changlei Wang, Alexander Cimaroli, Weiwei Meng, Ren-Gen Xiong, Yanfa Yan

Research output: Contribution to journalArticlepeer-review

633 Scopus Citations

Abstract

Efficient lead (Pb)-free inverted planar formamidinium tin triiodide (FASnI3) perovskite solar cells (PVSCs) are demonstrated. Our FASnI3 PVSCs achieved average power conversion efficiencies (PCEs) of 5.41% +/- 0.46% and a maximum PCE of 6.22% under forward voltage scan. The PVSCs exhibit small photocurrent-voltage hysteresis and high reproducibility. The champion cell showed a steady-state efficiency of almost equal to 6.00% for over 100 s.
Original languageAmerican English
Pages (from-to)9333-9340
Number of pages8
JournalAdvanced Materials
Volume28
Issue number42
DOIs
StatePublished - 2016

NREL Publication Number

  • NREL/JA-5K00-67095

Keywords

  • lead-free, perovskite solar cells
  • pinhole-free
  • SnFadditives
  • uniform perovskites

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