Low-Temperature Solution-Grown CsPbBr$_{3}$ Single Crystals and Their Characterization
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Authors
Rakita, Y
Kedem, N
Gupta, S
Kalchenko, V
Böhm, ML
Kulbak, M
Cahen, D
Hodes, G
Publication Date
2016-10-05Journal Title
Crystal Growth and Design
ISSN
1528-7483
Publisher
American Chemical Society
Volume
16
Issue
10
Pages
5717-5725
Language
English
Type
Article
This Version
AM
Metadata
Show full item recordCitation
Rakita, Y., Kedem, N., Gupta, S., Sadhanala, A., Kalchenko, V., Böhm, M., Kulbak, M., et al. (2016). Low-Temperature Solution-Grown CsPbBr$_{3}$ Single Crystals and Their Characterization. Crystal Growth and Design, 16 (10), 5717-5725. https://doi.org/10.1021/acs.cgd.6b00764
Abstract
Cesium lead bromide (CsPbBr$_{3}$) was recently introduced as a potentially high performance thin-film halide perovskite (HaP) material for optoelectronics, including photovoltaics, significantly more stable than MAPbBr$_{3}$ (MA = CH$_{3}$NH$_{3}$+). Because of the importance of single crystals to study relevant material properties per se, crystals grown under conditions comparable to those used for preparing thin films, i.e., low-temperature solution-based growth, are needed. We show here two simple ways, antisolvent-vapor saturation or heating a solution containing retrograde soluble CsPbBr$_{3}$, to grow single crystals of CsPbBr$_{3}$ from a precursor solution, treated with acetonitrile (MeCN) or methanol (MeOH). The precursor solutions are stable for at least several months. Millimeter-sized crystals are grown without crystal-seeding and can provide a 100% yield of CsPbBr$_{3}$ perovskite crystals, avoiding a CsBr-rich (or PbBr$_{2}$-rich) composition, which is often present alongside the perovskite phase. Further growth is demonstrated to be possible with crystal seeding. The crystals are characterized in several ways, including first results of charge carrier lifetime (30 ns) and an upper-limit of the Urbach energy (19 meV). As the crystals are grown from a polar aprotic solvent (DMSO), which is similar to those used to grow hybrid organic-inorganic HaP crystals, this may allow growing mixed (organic and inorganic) monovalent cation HaP crystals.
Sponsorship
G.H. and D.C. acknowledge the Israel Ministry of Science and the Israel National Nano-Initiative for partial support and G.H. acknowledges the Leona M. and Harry B. Helmsley Charitable Trust. A.S., M.L.B., and R.H.F. would like acknowledge EPSRC for their support. A.S. would also like to acknowledge support from an India-UK APEX project.
Funder references
EPSRC (via Brunel University London) (unknown)
EPSRC (EP/G060738/1)
Identifiers
External DOI: https://doi.org/10.1021/acs.cgd.6b00764
This record's URL: https://www.repository.cam.ac.uk/handle/1810/263934
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