<abstract xmlns="http://www.w3.org/1999/xhtml">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.</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.

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

Optoelectronics Research Group, Faculty of Electrical and Electronics Engineering

Power System Optimization Research Group, Faculty of Electrical and Electronics Engineering

National Kaohsiung University of Applied Sciences

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Improving color uniformity and color rending index of remote-phosphor packaging white LEDs by co-doping SiO and SrSiN:Eu particles

Based on some advantageous properties, such as fast response time, environment friendliness, small size, long lifetime, and high efficiency, white LEDs are...

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

Published Online: Nov 02, 2018

Page range: 370 - 374

Received: Jan 05, 2017

Accepted: May 05, 2018

DOI: https://doi.org/10.2478/msp-2018-0061

Keywords
white LEDs (WLEDs), remote-phosphor white LEDs (RP-WLEDs), SiO, SrSiN:Eu phosphor, color rendering index, color uniformity

© 2018 Tran Hoang Quang Minh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Published Online: Nov 02, 2018

Page range: 370 - 374

Received: Jan 05, 2017

Accepted: May 05, 2018

DOI: https://doi.org/10.2478/msp-2018-0061

Keywordswhite LEDs (WLEDs), remote-phosphor white LEDs (RP-WLEDs), SiO, SrSiN:Eu phosphor, color rendering index, color uniformity

© 2018 Tran Hoang Quang Minh et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

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

Keywords
white LEDs (WLEDs), remote-phosphor white LEDs (RP-WLEDs), SiO, SrSiN:Eu phosphor, color rendering index, color uniformity