Abstract
Halide perovskite semiconductors such as methylammonium lead iodide (CH 3 NH 3 PbI 3 ) have achieved great success in photovoltaic devices; however, concerns surrounding toxicity of lead and material stability have motivated the field to pursue alternative perovskite compositions and structures. Vacancy-ordered double perovskites are a defect-ordered variant of the perovskite structure characterized by an antifluorite arrangement of isolated octahedral units bridged by A-site cations. In this Review, we focus upon the structure-dynamics-property relationships in vacancy-ordered double perovskite semiconductors as they pertain to applications in photovoltaics, and we propose avenues of future study within the context of the broader perovskite halide literature. We describe the compositional and structural motifs that dictate the optical gaps and charge transport behavior and discuss the implications of charge ordering, lattice dynamics, and organic-inorganic coupling upon the properties of these materials. The design principles we elucidate here represent an important step toward extending our understanding of perovskite functionality to defect-ordered perovskites.
Original language | English |
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Pages (from-to) | 1184-1195 |
Number of pages | 12 |
Journal | Chemistry of Materials |
Volume | 31 |
Issue number | 4 |
DOIs | |
Publication status | Published - 26 Feb 2019 |
Bibliographical note
Funding Information:This work was supported by Grant DE-SC0016083 funded by the U.S. Department of Energy, Office of Science. J.R.N. and A.E.M. acknowledge support from Research Corporation for Science Advancement through a Cottrell Scholar Award, and J.R.N. thanks the A.P. Sloan Foundation for assistance provided from a Sloan Research Fellowship. This work made use of the ARCHER UK National Supercomputing Service, via membership of the UK’s HEC Materials Chemistry Consortium which is funded by EPSRC (Grant EP/L000202). D.O.S. acknowledges support from the EPSRC (Grant EP/N01572X/1). D.O.S. acknowledges membership of the Materials Design Network. A.M.G. acknowledges Diamond Light Source for the cosponsorship of a studentship on the EPSRC Centre for Doctoral Training in Molecular Modeling and Materials Science (Grant EP/L015862/1).
Publisher Copyright:
© 2019 American Chemical Society.
ASJC Scopus subject areas
- General Chemistry
- General Chemical Engineering
- Materials Chemistry