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De, Pham Van
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Environmental Science Materials Science & Nanotechnology Physics

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MgO Scattering Effects on CCT Uniformity and Lumen Strength of The Traditional White LED Packages De, Pham Van; Thinh, Dang Truong; Ho , Sang Dang
Science and Technology Indonesia Vol. 10 No. 4 (2025): October
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.4.1280-1287

Abstract

Scattering of light within white light-emitting diodes (LEDs) is crucial for minimizing internal reflection and ensuring consistent color distribution. Among the array of scattering-induced nanoparticles, magnesium oxide (MgO) stands out for its distinctive scattering performance, positioning it as a promising material in the field of optic fiber sensing. This study investigates the integration of MgO nanoparticles into yellow phosphor films with the aim of augmenting the color uniformity and luminous efficiency of conventional white LEDs, specifically those excited by blue light. Light scattering is evaluated across varying concentrations of MgO within the phosphor layer. Results reveal that manipulation of MgO nanoparticle concentration enables precise control over correlated color temperature (CCT) regulation in white LEDs. Furthermore, the inclusion of MgO nanoparticles reduces the requisite amount of yellow phosphor for LED fabrication, thereby curbing production costs. Significantly, MgO exhibits potential in harmonizing CCT and luminosity in white LEDs. Additionally, there is a marginal improvement in color quality scale with increasing MgO concentration. The optimal MgO concentration for achieving a balance between CCT uniformity, luminosity, and color reproduction parameters is determined to be 7 wt.%.
Co-Authors Ho , Sang Dang Thinh, Dang Truong