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

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 photoc...

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Veröffentlicht in:	Advanced materials (Weinheim) 2016-11, Vol.28 (42), p.9333-9340
Hauptverfasser:	Liao, Weiqiang, Zhao, Dewei, Yu, Yue, Grice, Corey R., Wang, Changlei, Cimaroli, Alexander J., Schulz, Philip, Meng, Weiwei, Zhu, Kai, Xiong, Ren-Gen, Yan, Yanfa
Format:	Artikel
Sprache:	eng
Schlagworte:	Efficiency Electric potential Energy conversion efficiency FASnI3 lead-free lead‐free, perovskite solar cells MATERIALS SCIENCE perovskite solar cells Perovskites Photovoltaic cells pinhole-free Reproducibility SnF2 additives Solar cells SOLAR ENERGY uniform perovskites Voltage
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Zusammenfassung:	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 shows a steady‐state efficiency of ≈6.00% for over 100 s.
ISSN:	0935-9648 1521-4095
DOI:	10.1002/adma.201602992