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Stable Low‐Bandgap Pb–Sn Binary Perovskites for Tandem Solar Cells
Author(s) -
Yang Zhibin,
Rajagopal Adharsh,
Chueh ChuChen,
Jo Sae Byeok,
Liu Bo,
Zhao Ting,
Jen Alex K.Y.
Publication year - 2016
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201602696
Subject(s) - tandem , materials science , perovskite (structure) , band gap , energy conversion efficiency , perovskite solar cell , optoelectronics , solar cell , chemical engineering , composite material , engineering
A low‐bandgap (1.33 eV) Sn‐based MA 0.5 FA 0.5 Pb 0.75 Sn 0.25 I 3 perovskite is developed via combined compositional, process, and interfacial engineering. It can deliver a high power conversion efficiency (PCE) of 14.19%. Finally, a four‐terminal all‐perovskite tandem solar cell is demonstrated by combining this low‐bandgap cell with a semitransparent MAPbI 3 cell to achieve a high efficiency of 19.08%.

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