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Perovskite Solar Cells: A New Perspective on the Role of A‐Site Cations in Perovskite Solar Cells (Adv. Energy Mater. 14/2018)
Author(s) -
Myung Chang Woo,
Yun Jeonghun,
Lee Geunsik,
Kim Kwang S.
Publication year - 2018
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.201870062
Subject(s) - polaron , perovskite (structure) , materials science , lattice (music) , excited state , perovskite solar cell , solar cell , optoelectronics , electron , crystallography , chemistry , physics , atomic physics , quantum mechanics , acoustics
The cover image representing article 1702898 by Geunsik Lee, Kwang S. Kim and co‐workers, highlights four proposed A‐site cations, N 2 H 5 , NH 3 F, LiNH 2 CH 3 , and NH 3 OH for perovksite solar cells compared to conventional A‐site cation Cs and CH 3 NH 3 . In a Fröhlich polaron picture, proposed A‐site cations reduce coupling between photo‐excited carriers (electron and hole) and lattice, thus enhancing the lifetime of carriers. This theoretical study will facilitate the synthesis of novel perovskite solar cell materials.