Related Experiment Video
Updated: Jan 21, 2026

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
Published on: June 7, 2020
The optical properties of Cs4PbBr6-CsPbBr3 perovskite composites
Zhixing Gan1, Fei Zheng, Wenxin Mao
1Centre for Translational Atomaterials, Swinburne University of Technology, Hawthorn 3122, Australia. bjia@swin.edu.au xwen@swin.edu.au.
Abstract:
Although the optoelectronic applications of metal halide perovskites have been intensively investigated in recent years, the fundamental carrier dynamics of zero-dimensional (0D) Cs4PbBr6 perovskites has been relatively underexplored; in particular, the nature of the green fluorescence is highly debated. Nevertheless, the unique photophysical properties are of immense interest for a variety of potential applications. In this work, the green emission of the CsPbBr3-Cs4PbBr6 perovskite composites is studied using temperature dependent photoluminescence (PL). The PL spectra at different temperatures simultaneously contain two sub-peaks (520 nm and 550 nm), which are ascribed to the emissions of the band-edge and the defect trapped exciton of CsPbBr3. This finding will help to understand the controversial photoluminescence currently observed in different 0D Cs4PbBr6 perovskites.
Related Concept Videos
Properties of Enantiomers and Optical Activity
Physical and Chemical Properties of Matter
Classifying Matter by Composition
According to its composition, the matter can be classified into two broad categories — pure substances and mixtures.
A pure substance is a form of matter that has a constant composition throughout with uniform properties. For example, any sample of sucrose has the same composition and same physical properties, such as melting point, color, and sweetness, regardless of the source from which it is isolated.
A mixture is composed of two or...
General Properties of Solutions
Composition of Blood
Formed elements constitute the remaining 45% of the blood volume. These...
Composite Bodies
Composite bodies have widespread applications in mechanical engineering, from automobiles to aircraft to rockets. For example, an automobile wheel comprises...

