Improving color uniformity and color rending index of remote-phosphor packaging white LEDs by co-doping SiO2 and Sr2Si5N8:Eu2+ particles-Reference-Cited by-同舟云学术

Improving color uniformity and color rending index of remote-phosphor packaging white LEDs by co-doping SiO2 and Sr2Si5N8:Eu2+ particles

Published:2018-09-01 Issue:3 Volume:36 Page:370-374
ISSN:2083-134X
Container-title:Materials Science-Poland
language:en
Short-container-title:

Author:

Minh Tran Hoang Quang¹,Nhan Nguyen Huu Khanh¹,Anh Nguyen Doan Quoc²,Nam Tran Thanh¹,Lee Hsiao-Yi¹³

Affiliation:

1. Optoelectronics Research Group, Faculty of Electrical and Electronics Engineering , Ton Duc Thang University , Ho Chi Minh City , Vietnam

2. Power System Optimization Research Group, Faculty of Electrical and Electronics Engineering , Ton Duc Thang University , Ho Chi Minh City , Vietnam

3. Department of Electrical Engineering , National Kaohsiung University of Applied Sciences , Kaohsiung City , Taiwan

Abstract

Abstract Based on some advantageous properties, such as fast response time, environment friendliness, small size, long lifetime, and high efficiency, white LEDs are increasingly used in common illumination applications. In this research, by co-doping of redemitting Sr2Si5N8:Eu2+ phosphor and adding SiO2 particles to yellow-emitting YAG:Ce phosphor compounds, a new approach for improving color uniformity and color rending index of remote-phosphor structure white LEDs is proposed and demonstrated. The obtained results clearly indicate that the color rendering index (CRI) and color uniformity (ΔCCT) significantly depend on Sr2Si5N8:Eu2+ concentration. The results provide a potential practical solution for manufacturing remote-phosphor white LEDs (RP-WLEDs) in the near future.

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-2018-0061

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