Applying SiO₂ nano-particles for improving optical properties of WLED conformal and in-cup structures

This article is the analysis of SiO2 nano-particles’ influences on luminous efficiency and color temperature uniformity a remote phosphor structure in WLED. The purpose integrating into silicone layer to significantly promote scattering occurrences. Particularly, with an appropriate proportion SiO2, there could be more blue lights generated at large angles, leading reducing angular-dependent deviation. flux also can get benefits from addition owing proper air-phosphor refractive index ratio provided by this SiO2/silicone compound. attained experimental results were compared optical values non-SiO2 configuration showed notable enhancement. deviation was reduced approximately 600 K angles -700 ­to 700. Additionally, lumen improved 2.25% 120 mA driving current. Hence, used boost both efficacy for remote-phosphor