Open AccessSynthesis of Mn-doped CsPbClxBr3−x perovskite nanocrystals using ultrasonic irradiation-promoted with decrease of reaction order
Author(s) -
Shuhong Xu,
Ruohu Zhang,
Hao Wu,
Yiping Cui,
Chunlei Wang,
Haibao Shao
Publication year - 2020
Publication title -
nano express
Language(s) - English
Resource type - Journals
ISSN - 2632-959X
DOI - 10.1088/2632-959x/ab9b30
Subject(s) - nanocrystal , perovskite (structure) , materials science , impurity , doping , activation energy , nanoparticle , nanotechnology , chemical engineering , analytical chemistry (journal) , chemistry , optoelectronics , crystallography , engineering , organic chemistry , chromatography
The incorporation of impurity cation as a way of introducing various novel functionalities provides an additional level of control over the electronic and optical properties of perovskite nanocrystals (NCs). However, the conventional post-synthetic cation exchange approaches suffer from large time and energy consumption. In this work, we developed a novel one-pot method to synthesize Mn-doped CsPbCl x Br 3−x NCs by merit of sonochemical technique, achieving dramatically rapid reduce of time and energy consumption. The localized hot spots with high transient temperature, pressure, and cooling rate, as well as an excellent stirring action of ultrasonic preparation facilitate the diffusion of Mn 2+ in perovskite lattice. Besides, further reaction kinetics investigation reveals an apparent decrease of reaction order from original method (2.4) to our ultrasound-assisted method (1.0).