Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 49, Pages 17631-17635Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201910225
Keywords
CH3NH3PbBr3; formation mechanisms; interfacial synthesis; kinetic study; perovskite nanocrystals
Categories
Funding
- National Natural Science Foundation of China [51672068, 51902082]
- Natural Science Foundation of Tianjin City [17JCYBJC41500]
- Natural Science Foundation of Hebei Province [B2016202229, F2019202252]
- Scientific Research Foundation of State Human Resource Ministry for Returned Talent Scholars [CG2015030001]
Ask authors/readers for more resources
Fundamental insights into the reaction kinetics of organic-inorganic lead halide perovskite nanocrystals (LHP NCs) are still limited due to their ultrafast formation rate. Herein, we develop a water-oil interfacial synthesis of MAPbBr(3) NCs (MA=CH3NH3+), which prolongs the reaction time to tens of minutes. This method makes it possible to monitor in situ the formation process of MAPbBr(3) NCs and observe successive spectral evolutions from 438 to 534 nm in a single reaction by extending reaction time. The implementation of this method depends on reducing the formation rate of PbBr64- octahedra and the diffusion rate of MA. The formation of PbBr64- is a rate-determining step, and the biphasic system offers a favorable reaction condition to control the mass transfer of MA. The effects of temperature and concentration of precursor and ligand are investigated in detail.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available