Enhanced light extraction by heterostructure photonic crystals toward white-light-emission

Heng Li; Zhaohua Xu; Bin Bao; Yanlin Song

doi:10.1016/j.jcis.2015.11.052

Enhanced light extraction by heterostructure photonic crystals toward white-light-emission

J Colloid Interface Sci. 2016 Mar 1:465:42-6. doi: 10.1016/j.jcis.2015.11.052. Epub 2015 Nov 22.

Authors

Heng Li¹, Zhaohua Xu², Bin Bao³, Yanlin Song⁴

Affiliations

¹ Department of Material Technology, Jiangmen Polytechnic, Jiangmen, Guangdong 529090, PR China.
² Department of Material Technology, Jiangmen Polytechnic, Jiangmen, Guangdong 529090, PR China. Electronic address: xuzhaohua@iccas.ac.cn.
³ Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
⁴ Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Green Printing, Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China. Electronic address: ylsong@iccas.ac.cn.

PMID: 26641563
DOI: 10.1016/j.jcis.2015.11.052

Abstract

In this work, we present a novel approach on the simultaneous enhancement of intensity of red, green, and blue (RGB) emission by heterostructure colloidal photonic crystals (PCs) with tri-stopbands. The intensity of RGB emission on heterostructure PCs with tri-stopbands overlapping emission wavelengths of RGB QDs can be up to about 8-fold enhancement in comparison to that on the control sample. Furthermore, CIE diagrams show the chromaticity parameters approaching that of white light. The method will be favorable for developing optical devices of high performance.

Keywords: Heterostructure; Photonic crystals; RGB emission; Tri-stopbands.