Abstract
The effects of scattering particles on the color properties of conventional and quantum dot-embedded white light-emitting diodes (LEDs) were investigated by using optical simulation. The inclusion of red quantum dot particles in the conventional white LEDs consisting of blue LED chips and yellow phosphors improved the color-rendering properties significantly due to the enhanced deep red components. The scattering particles embedded in the resin induced multiple scattering and contributed to the color conversion of phosphors and quantum dots, which became more substantial as the difference in the refractive index between the resin and the scattering particles increased. This study showed that adopting scattering particles is an efficient way to change the correlated color temperature in a wide range and remove the color dispersion of conventional white LEDs.
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This research was supported by the Ministry of Trade, Industry and Energy (MOTIE), Korea Institute for Advancement of Technology (KIAT) through the program of Smart Specialized Infrastructure Construction (No. P0013743).
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Hong, S.C., Ko, JH. Effects of scattering particles on the color rendering and color dispersion of white light-emitting diodes studied by optical simulation. J. Korean Phys. Soc. 79, 631–637 (2021). https://doi.org/10.1007/s40042-021-00285-x
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DOI: https://doi.org/10.1007/s40042-021-00285-x