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

• Autorzy: Minh T. H. Q. , Nhan N. H. K. , Anh N. D. Q. , Nam T. T. , Lee H.-Y.

Identyfikatory

DOI

10.2478/msp-2018-0061

• Języki publikacji: EN

Abstrakty

EN

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 (DCCT) 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.

Słowa kluczowe

EN

white LEDs; WLEDs; remote-phosphor white LEDs; RP-WLEDs; SiO2; Sr2Si5N8:Eu2+ phosphor; color rendering index; color uniformity

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2018
• Tom: Vol. 36, No. 3
• Strony: 370--374
• Opis fizyczny: Bibliogr. 18 poz., rys.

Twórcy

autor

Minh T. H. Q.

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

autor

Nhan N. H. K.

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

autor

Anh N. D. Q.

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

autor

Nam T. T.

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

autor

Lee H.-Y.

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

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