Issue 2, 2020

Luminescence enhancement of CsPbBr3 quantum dot glasses induced by two unexpected methods: mechanical and hydration crystallization

Abstract

Theoretically, the realization of phase transformation in glass requires enough energy to overcome a certain barrier. Conventionally, the transition from amorphous to crystalline phase is realized by controlling the crystallization process in the heating process. However, little progress has been made in the study of mechanical crystallization and hydration crystallization, which do not involve excessive energy transition processes. In this work, CsPbBr3 quantum dot glasses with good thermal stability and water stability were firstly obtained by mechanical crystallization and hydration crystallization methods, which are completely different from the traditional methods. An intense 523 nm emission with a long lifetime of 75.2 ns was observed in the CsPbBr3 quantum dot glass prepared under mechanical stress. Interestingly, a strong green emission was found in the CsPbBr3 quantum dot glass prepared under hydration conditions. Furthermore, the CsPbBr3 quantum dot glass obtained by mechanical devitrification shows the phenomenon of luminescence enhancement with the extension of the observation time in water, which further verifies the phenomenon of the hydration crystallization. In short, the present work not only provides a novel channel for the future study of quantum dots but also brings a significant revolution to the production of quantum dot glass materials.

Graphical abstract: Luminescence enhancement of CsPbBr3 quantum dot glasses induced by two unexpected methods: mechanical and hydration crystallization

Article information

Article type
Communication
Submitted
07 nov 2019
Accepted
22 nov 2019
First published
22 nov 2019

J. Mater. Chem. C, 2020,8, 473-480

Luminescence enhancement of CsPbBr3 quantum dot glasses induced by two unexpected methods: mechanical and hydration crystallization

P. Li, W. Xie, W. Mao, Y. Tian, F. Huang, S. Xu and J. Zhang, J. Mater. Chem. C, 2020, 8, 473 DOI: 10.1039/C9TC06075H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements