Eu2+-activated strontium-barium silicate: a positive solution for improving luminous efficacy and color uniformity of white light-emitting diodes-Reference-Cited by-同舟云学术

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

Published:2020-12-01 Issue:4 Volume:38 Page:594-600
ISSN:2083-134X
Container-title:Materials Science-Poland
language:en
Short-container-title:

Author:

Thi My Hanh Nguyen¹,That Phung Ton²,Anh Nguyen Doan Quoc³

Affiliation:

1. Faculty of Mechanical Engineering , Industrial University of Ho Chi Minh City , Viet Nam

2. Faculty of Electronics Technology , Industrial University of Ho Chi Minh City , Ho Chi Minh City , Vietnam

3. Faculty of Electrical and Electronics Engineering , Ton Duc Thang University , Ho Chi Minh City , Vietnam

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.sciendo.com/pdf/10.2478/msp-2020-0069

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