In:
Angewandte Chemie, Wiley, Vol. 129, No. 32 ( 2017-08), p. 9699-9704
Abstract:
A top‐down method is demonstrated for the fabrication of CH 3 NH 3 PbBr 3 and CH 3 NH 3 PbI 3 perovskite nanocrystals, employing a mixture of ligands oleic acid and oleylamine as coordinating solvents. This approach avoids the use of any polar solvents, skips multiple reaction steps by employing a simple ultrasonic treatment of the perovskite precursors, and yields rather monodisperse blue‐, green‐, and red‐emitting methylammonium lead halide nanocrystals with a high photoluminescence quantum yield (up to 72 % for the green‐emitting nanocrystals) and remarkably improved stability. After discussing all relevant reaction parameters, the green‐emitting CH 3 NH 3 PbBr 3 nanocrystals are employed as a component of down‐conversion white‐light‐emitting devices .
Type of Medium:
Online Resource
ISSN:
0044-8249
,
1521-3757
DOI:
10.1002/ange.v129.32
DOI:
10.1002/ange.201705595
Language:
English
Publisher:
Wiley
Publication Date:
2017
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