Using Polar Alcohols for the Direct Synthesis of Cesium Lead Halide Perovskite Nanorods with Anisotropic Emission

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

44 Scopus Citations
View graph of relations

Author(s)

  • He Huang
  • Alexander F. Richter
  • Stephen V. Kershaw
  • Jochen Feldmann

Detail(s)

Original languageEnglish
Pages (from-to)8237-8245
Journal / PublicationACS Nano
Volume13
Issue number7
Online published11 Jul 2019
Publication statusPublished - 23 Jul 2019

Abstract

Semiconductor nanorods (NRs) offer the useful property of linearly polarized light emission. While this would be an attractive functionality for strongly emitting perovskite nanoparticles, to date, there has been limited success in demonstrating a direct chemical synthesis of cesium lead halide perovskite NRs. In this work, we realized the direct synthesis of CsPbBr3 NRs with an average width of around 5 nm and average lengths of 10.8 and 23.2 nm, respectively, in two samples, which show a high photoluminescence quantum yield of 60-76% and reasonably high emission anisotropy of about 0.2 for longer rods. Both CsPbCl3 and CsPbI3 NRs with similar dimensions have then been derived from the CsPbBr3 NRs by anion-exchange reactions. Remarkably, the synthesis of the NRs has been achieved in polar alcohols, a class of solvents not usually found to be beneficial in classical perovskite nanoparticle synthesis. This work not only offers the possibility to control the shape of chemically synthesized perovskite nanocrystals but also constitutes the hitherto less common strategy of synthesizing perovskite nanoparticles in polar rather than nonpolar or only weakly polar solvents.

Research Area(s)

  • anisotropic emission, nanorods, perovskite nanocrystals, polar alcohols, ultrasonication

Citation Format(s)

Using Polar Alcohols for the Direct Synthesis of Cesium Lead Halide Perovskite Nanorods with Anisotropic Emission. / Li, Yanxiu; Huang, He; Xiong, Yuan; Richter, Alexander F.; Kershaw, Stephen V.; Feldmann, Jochen; Rogach, Andrey L.

In: ACS Nano, Vol. 13, No. 7, 23.07.2019, p. 8237-8245.

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