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Perovskite Solar Cells: Reverse‐Graded 2D Ruddlesden–Popper Perovskites for Efficient Air‐Stable Solar Cells (Adv. Energy Mater. 21/2019)
Author(s) -
Wei Yi,
Chu Huailong,
Tian Yuyang,
Chen Baoquan,
Wu Kaifeng,
Wang Junhui,
Yang Xichuan,
Cai Bin,
Zhang Yongfei,
Zhao Jijun
Publication year - 2019
Publication title -
advanced energy materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.08
H-Index - 220
eISSN - 1614-6840
pISSN - 1614-6832
DOI - 10.1002/aenm.201970075
Subject(s) - materials science , perovskite (structure) , energy conversion efficiency , solar cell , optoelectronics , chemical engineering , engineering
In article number 1900612 , Jijun Zhao and co‐workers report new 2D Ruddlesden‐Popper Perovskites (RPPs) for solar cells. The films exhibit reverse‐graded quantum‐well distribution, which facilitates internal charge transfer and photon collection. This structure enables vulnerable large‐n RPPs to be protected by more resistant small‐n RPPs. Thus, a high‐performance solar cell with 15.05% efficiency is achieved and the stability in humid conditions is significantly enhanced.