Polarized emission from CsPbX3 perovskite quantum dots

Dan Wang; Dan Wu; Di Dong; Wei Chen; Junjie Hao; Jing Qin; Bing Xu; Kai Wang; Xiaowei Sun

doi:10.1039/c6nr01915c

Polarized emission from CsPbX3 perovskite quantum dots

Nanoscale. 2016 Jun 2;8(22):11565-70. doi: 10.1039/c6nr01915c.

Authors

Dan Wang¹, Dan Wu², Di Dong¹, Wei Chen¹, Junjie Hao¹, Jing Qin¹, Bing Xu¹, Kai Wang³, Xiaowei Sun⁴

Affiliations

¹ Department of Electrical and Electronic Engineering, College of Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China. wangk@sustc.edu.cn.
² School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.
³ Department of Electrical and Electronic Engineering, College of Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China. wangk@sustc.edu.cn and Shenzhen Key Laborary of 3rd Generation Semiconductor Devices (SUSTech), Shenzhen, 518055, China.
⁴ Department of Electrical and Electronic Engineering, College of Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China. wangk@sustc.edu.cn and School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore, 639798, Singapore.

PMID: 27211018
DOI: 10.1039/c6nr01915c

Abstract

Compared to organic/inorganic hybrid perovskites, full inorganic perovskite quantum dots (QDs) exhibit higher stability. In this study, full inorganic CsPbX3 (X = Br, I and mixed halide systems Br/I) perovskite QDs have been synthesized and interestingly, these QDs showed highly polarized photoluminescence which is systematically studied for the first time. Furthermore, the polarization of CsPbI3 was as high as 0.36 in hexane and 0.40 as a film. The CsPbX3 perovskite QDs with high polarization properties indicate that they possess great potential for application in new generation displays with wide colour gamut and low power consumption.