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

• Autorzy: Thi My Hanh Nguyen , That Phung Ton , Anh Nguyen Doan Quoc

Identyfikatory

DOI

10.2478/msp-2020-0069

• Języki publikacji: EN

Abstrakty

EN

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-green-emitting 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.

Słowa kluczowe

EN

white light-emitting diodes; SrBaSiO4:Eu2+; luminous efficacy; color uniformity; Mie-scattering theory

• Wydawca: De Gruyter
• Czasopismo: Materials Science Poland
• Rocznik: 2020
• Tom: Vol. 38, No. 4
• Strony: 594--600
• Opis fizyczny: Bibliogr. 26 poz., rys., tab.

Twórcy

autor

Thi My Hanh Nguyen

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

autor

That Phung Ton

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

autor

Anh Nguyen Doan Quoc

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

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).