Journal
CHEMICAL PHYSICS LETTERS
Volume 702, Issue -, Pages 21-25Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2018.04.057
Keywords
Organolead halide perovskites; Capping molecule; Morphology; Oleylamine; Stability
Funding
- National Natural Science Foundation of China [61471233, 51590902]
- Shanghai Polytechnic University
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Methylammonium lead bromide (CH3NH3PbBr3) nanocrystals have great potentials for lighting and display applications. Previously we synthesized CH3NH3PbBr3 nanocrystals using oleylamine as capping molecule and found that by increasing the oleylamine to CH3NH3PbBr3 perovskite ratio (OPR), the photoluminescence wavelengths and morphology of CH3NH3PbBr3 nanocrystals could be varied from 530 nm (green) platelets to 460 nm (blue) particles. Here we modified the synthesis to direct injection of precursors into toluene and found that increasing OPR not only changes the wavelength and morphology of nanocrystals but also the size of the unit cells. (C) 2018 Elsevier B.V. All rights reserved.
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