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SiW 12 –TiO 2 Mesoporous Layer for Enhanced Electron‐Extraction Efficiency and Conductivity in Perovskite Solar Cells
Author(s) -
Dong Guohua,
Ye Tengling,
Yang Yulin,
Sheng Li,
Xia Debin,
Wang Junhai,
Fan Xiao,
Fan Ruiqing
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201700290
Subject(s) - materials science , mesoporous material , perovskite (structure) , energy conversion efficiency , conductivity , layer (electronics) , spin coating , deposition (geology) , optoelectronics , semiconductor , chemical engineering , coating , nanotechnology , catalysis , chemistry , paleontology , biochemistry , sediment , engineering , biology
High quality electron‐transport layer (ETL) with superior optical and electrical properties is an essential part in high efficient perovskite solar cells (PSCs). In this work, SiW 12 –TiO 2 mesoporous film is prepared by a facile one‐step spin‐coating deposition method and successfully applied as ETL in PSCs. Compared with pristine TiO 2 ‐based PSC, the SiW 12 –TiO 2 ‐based one shows a remarkable enhanced power conversion efficiency (PCE) from 12.00 to 14.66 %, which is owed to the higher conductivity, electron‐extraction efficiency, and well‐matched energy level alignment of SiW 12 –TiO 2 film. Moreover, the SiW 12 –TiO 2 ‐based device also shows a good long‐time stability in under ambient conditions. This work demonstrates that using polyoxometalates (POMs) to modify the metal‐oxide semiconductors is an effective approach for further enhancing the performance of PSCs.