Have a personal or library account? Click to login
Eu2+-activated strontium-barium silicate: a positive solution for improving luminous efficacy and color uniformity of white light-emitting diodes Cover

Eu2+-activated strontium-barium silicate: a positive solution for improving luminous efficacy and color uniformity of white light-emitting diodes

Open Access
|Apr 2021

Abstract

In this research we have studied the lighting enhancement method by analyzing chromatic performance and luminous flux of light emitting diodes that produce white light. In order to achieve expected results, it is necessary to mix Eu2+-activated strontium-barium silicate (SrBaSiO4:Eu2+) with its phosphor compounding, which has been demonstrated to have considerable influence on lighting performance. The results showed that with the gradually increasing concentration of yellow-greenemitting SrBaSiO4:Eu2+ phosphor in LEDs devices, at 8500 K, the color homogeneity and the lighting output received a great improvement. The color quality scale, on the other hand, responded negatively to the increase in SrBaSiO4:Eu2+. The impact of SrBaSiO4:Eu2+ on optical properties of WLEDs was confirmed. The final step to optimize SrBaSiO4:Eu2+ usage in lighting development is to figure out a suitable amount of particles and optimize their size.

DOI: https://doi.org/10.2478/msp-2020-0069 | Journal eISSN: 2083-134X | Journal ISSN: 2083-1331
Language: English
Page range: 594 - 600
Submitted on: Jul 23, 2018
|
Accepted on: Apr 23, 2019
|
Published on: Apr 13, 2021
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2021 My Hanh Nguyen Thi, Phung Ton That, Nguyen Doan Quoc Anh, published by Wroclaw University of Science and Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.