Single-Crystal Growth and Thermal Stability of (CH3NH3)1-xCsxPbBr3

Hadar Kaslasi, Yishay Feldman, Yevgeny Rakita, David Cahen, Gary Hodes

Research output: Contribution to journalArticlepeer-review

8 Scopus citations


We describe the growth of single crystals of the halide perovskites APbBr3, with varying ratios of Cs to methylammonium (MA) on the A site, by antisolvent vapor-assisted crystallization (AVC) and characterize the structural and compositional homogeneity of the grown crystals. We find improved thermostability for the Cs-rich mixed crystals and suggest that this is caused by a combination of locking-in of the relatively large MA in the smaller lattice of the Cs-rich material as well as by stronger hydrogen bonding between the nitrogen of MA and Br due to reduced lattice size and/or octahedral tilting with increased Cs. We also show that it is possible to grow either compositionally homogeneous crystals or core-shell, compositionally graded crystals by changing the ratio of antisolvent to solvent in the AVC method.

Original languageEnglish
Pages (from-to)4366-4374
Number of pages9
JournalCrystal Growth and Design
Issue number7
StatePublished - 1 Jul 2020
Externally publishedYes

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