Issue 17, 2022

Revisiting the origin of green emission in Cs4PbBr6

Abstract

It is probably acceptable to state that the recent debate over the origin of green emission in Cs4PbBr6 and/or CsPbBr3 has been narrowed down to two major possibilities: (i) a defect-mediated event in Cs4PbBr6, or (ii) a radiative recombination of charge carriers at CsPbBr3 inclusions embedded within Cs4PbBr6. The first scenario is relatively broad in terms of identifying specific defects that could act as recombination centers, although Br-vacancy has been proposed as a potential candidate. In the case of the second possibility, the omnipresence of CsPbBr3 nanoinclusions even in pure phase Cs4PbBr6 is also a matter of contention. Resolving this “green emission question” is consequential to the further development of the Cs–Pb–X (X = halogen) system of perovskite-inspired optoelectronic materials. Here, we will briefly survey the current status of the literature and offer some perspectives with respect to the two possibilities noted above.

Graphical abstract: Revisiting the origin of green emission in Cs4PbBr6

Article information

Article type
Perspective
Submitted
15 мај 2022
Accepted
18 јул. 2022
First published
20 јул. 2022
This article is Open Access
Creative Commons BY license

Mater. Adv., 2022,3, 6791-6798

Revisiting the origin of green emission in Cs4PbBr6

K. Biswas, Mater. Adv., 2022, 3, 6791 DOI: 10.1039/D2MA00544A

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements