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Enhanced Efficiency and Stability of Inverted Perovskite Solar Cells Using Highly Crystalline SnO 2 Nanocrystals as the Robust Electron‐Transporting Layer
Author(s) -
Zhu Zonglong,
Bai Yang,
Liu Xiao,
Chueh ChuChen,
Yang Shihe,
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.201600619
Subject(s) - materials science , crystallinity , perovskite (structure) , energy conversion efficiency , nanocrystal , layer (electronics) , electron , chemical engineering , photovoltaic system , relative humidity , nanotechnology , optoelectronics , composite material , meteorology , ecology , quantum mechanics , biology , physics , engineering
Highly crystalline SnO 2 is demonstrated to serve as a stable and robust electron‐transporting layer for high‐performance perovskite solar cells. Benefiting from its high crystallinity, the relatively thick SnO 2 electron‐transporting layer (≈120 nm) provides a respectable electron‐transporting property to yield a promising power conversion efficiency (PCE)(18.8%) Over 90% of the initial PCE can be retained after 30 d storage in ambient with ≈70% relative humidity.