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From Nanostructural Evolution to Dynamic Interplay of Constituents: Perspectives for Perovskite Solar Cells
Author(s) -
Hwang Taehyun,
Lee Byungho,
Kim Jinhyun,
Lee Sangheon,
Gil Bumjin,
Yun Alan Jiwan,
Park Byungwoo
Publication year - 2018
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201704208
Subject(s) - materials science , perovskite (structure) , nanoscopic scale , halide , optoelectronics , ionic bonding , photovoltaic system , charge carrier , photovoltaics , deposition (geology) , nanotechnology , ion , chemistry , inorganic chemistry , electrical engineering , paleontology , organic chemistry , engineering , sediment , biology , crystallography
Moving away from the high‐performance achievements in organometal halide perovskite (OHP)‐based optoelectronic and photovoltaic devices, intriguing features have been reported in that photocarriers and mobile ionic species within OHPs interact with light, electric fields, or a combination of both, which induces both spatial and temporal changes of optoelectronic properties in OHPs. Since it is revealed that the transport of photocarriers and the migration of ionic species are affected not only by each other but also by the inhomogeneous character, which is a consequence of the route selected to deposit OHPs, understanding the nanostructural evolution during OHP deposition, in terms of the resultant structural defects, electronic traps, and nanoscopic charge behaviors, will be valuable. Investigation of the film‐growth mechanisms and strategies adopted to realize OHP films with less‐defective large grains is of central importance, considering that single‐crystalline OHPs have exhibited the most beneficial properties, including carrier lifetimes. Critical factors governing the behavior of photocarriers, mobile ionic species, and nanoscale optoelectronic properties resulting from either or all of them are further summarized, which may potentially limit or broaden the optoelectronic and photovoltaic applications of OHPs. Through inspection of the recent advances, a comprehensive picture and future perspective of OHPs are provided.