Top-Down Fabrication of Stable Methylammonium Lead Halide Perovskite Nanocrystals by Employing a Mixture of Ligands as Coordinating Solvents

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Detail(s)

Original languageEnglish
Pages (from-to)9699-9704
Journal / PublicationAngewandte Chemie
Volume129
Issue number32
Online published13 Jun 2017
Publication statusPublished - 1 Aug 2017

Abstract

A top-down method is demonstrated for the fabrication of CH3NH3PbBr3 and CH3NH3PbI3 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 CH3NH3PbBr3 nanocrystals are employed as a component of down-conversion white-light-emitting devices.

Citation Format(s)

Top-Down Fabrication of Stable Methylammonium Lead Halide Perovskite Nanocrystals by Employing a Mixture of Ligands as Coordinating Solvents. / Huang, He; Xue, Qi; Chen, Bingkun; Xiong, Yuan; Schneider, Julian; Zhi, Chunyi; Zhong, Haizheng; Rogach, Andrey L.

In: Angewandte Chemie, Vol. 129, No. 32, 01.08.2017, p. 9699-9704.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal