TY - JOUR
T1 - Single-Crystal Growth and Thermal Stability of (CH3NH3)1-xCsxPbBr3
AU - Kaslasi, Hadar
AU - Feldman, Yishay
AU - Rakita, Yevgeny
AU - Cahen, David
AU - Hodes, Gary
N1 - Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/7/1
Y1 - 2020/7/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85087650080&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.0c00122
DO - 10.1021/acs.cgd.0c00122
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AN - SCOPUS:85087650080
SN - 1528-7483
VL - 20
SP - 4366
EP - 4374
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 7
ER -