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Review on Practical Interface Engineering of Perovskite Solar Cells: From Efficiency to Stability
Author(s) -
Yang Zhichun,
Babu Balaraju Hari,
Wu Shaohang,
Liu Tianlun,
Fang Shaoying,
Xiong Zhenzhong,
Han Liyuan,
Chen Wei
Publication year - 2020
Publication title -
solar rrl
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.544
H-Index - 37
ISSN - 2367-198X
DOI - 10.1002/solr.201900257
Subject(s) - perovskite (structure) , halide , degradation (telecommunications) , materials science , nanotechnology , interface (matter) , diffusion , chemical engineering , engineering physics , chemistry , computer science , inorganic chemistry , engineering , telecommunications , composite material , thermodynamics , physics , capillary number , capillary action
Exceptionally high efficiencies for organic–inorganic hybrid perovskite solar cells (PSCs) have been achieved. However, their operational stability still needs to be improved. The intrinsic instability of halide perovskites caused by the presence of volatile organic cations, as well as the degradation of hybrid perovskites induced by the adverse permeation of environmental water (H 2 O)/oxygen (O 2 ) and the undesired ion diffusion or migration are the major reasons. Beyond strengthening perovskites themselves, interface engineering is now regarded as a valid strategy to prolong device lifetime by preventing the undesired degradation pathways. This comprehensive review highlights the utilization of practical interface engineering for enhancing the efficiency and stability of organic–inorganic lead halide PSCs. First, the impacts of interface design on the energy‐level alignment and carrier dynamics are overviewed. Second, recent progresses on the development of interfacial materials for simultaneously achieving high efficiency and stability of PSCs are summarized. At last, the interfacial layer design principles along with future outlook of this rapidly developing field are discussed.