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Defect Activity in Lead Halide Perovskites
Author(s) -
Motti Silvia G.,
Meggiolaro Daniele,
Martani Samuele,
Sorrentino Roberto,
Barker Alex J.,
De Angelis Filippo,
Petrozza Annamaria
Publication year - 2019
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.201901183
Subject(s) - halide , materials science , perovskite (structure) , semiconductor , lead (geology) , action (physics) , density functional theory , set (abstract data type) , nanotechnology , engineering physics , optoelectronics , computer science , computational chemistry , inorganic chemistry , crystallography , physics , chemistry , quantum mechanics , geomorphology , geology , programming language
The presence of various types of chemical interactions in metal‐halide perovskite semiconductors gives them a characteristic “soft” fluctuating structure, prone to a wide set of defects. Understanding of the nature of defects and their photochemistry is summarized, which leverages the cooperative action of density functional theory investigations and accurate experimental design. This knowledge is used to describe how defect activity determines the macroscopic properties of the material and related devices. Finally, a discussion of the open questions provides a path towards achieving an educated prediction of device operation, necessary to engineer reliable devices.