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SnO 2 : A Wonderful Electron Transport Layer for Perovskite Solar Cells
Author(s) -
Jiang Qi,
Zhang Xingwang,
You Jingbi
Publication year - 2018
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201801154
Subject(s) - perovskite (structure) , materials science , optoelectronics , layer (electronics) , energy conversion efficiency , electron , planar , electron transport chain , ultraviolet , transport layer , degradation (telecommunications) , absorption (acoustics) , nanotechnology , chemical engineering , chemistry , computer science , physics , composite material , biochemistry , telecommunications , computer graphics (images) , quantum mechanics , engineering
The highest power conversion efficiency of perovskite solar cells is beyond 22%. Charge transport layers are found to be critical for device performance and stability. A traditional electron transport layer (ETL), such as TiO 2 , is not very efficient for charge extraction at the interface, especially in planar structure. In addition, the devices using TiO 2 suffer from serious degradation under ultraviolet illumination. SnO 2 owns a better band alignment with the perovskite absorption layer and high electron mobility, which is helpful for electron extraction. In this Review, recent progresses in efficient and stable perovskite solar cells using SnO 2 as ETL are summarized.