title: Lead-Free Inverted Planar Formamidinium Tin Triiodide Perovskite Solar Cells Achieving Power Conversion Efficiencies up to 6.22.
abstract: Efficient lead (Pb)-free inverted planar formamidinium tin triiodide (FASnI3) perovskite solar cells (PVSCs) are demonstrated. Our FASnI3PVSCs 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 shows a steady-state efficiency of ≈6.00% for over 100 s.
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.|Ordered Matter Science Research Center, Southeast University, Nanjing, 211189, P. R. China.
authors: Weiqiang
authors: W
authors: Liao
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Dewei
authors: D
authors: Zhao
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Yue
authors: Y
authors: Yu
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Corey R
authors: CR
authors: Grice
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Changlei
authors: C
authors: Wang
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Alexander J
authors: AJ
authors: Cimaroli
authors: Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA.
authors: Philip
authors: P
authors: Schulz
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Weiwei
authors: W
authors: Meng
authors: Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, CO, 80401, USA.
authors: Kai
authors: K
authors: Zhu
authors: Ordered Matter Science Research Center, Southeast University, Nanjing, 211189, P. R. China.
authors: Ren-Gen
authors: RG
authors: Xiong
authors: Department of Physics and Astronomy and Wright Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH, 43606, USA.
authors: Yanfa
authors: Y
authors: Yan
keywords: SnF2 additives; lead-free, perovskite solar cells; pinhole-free; uniform perovskites