Digest Journal of Nanomaterials and Biostructures
In this paper, the influence of the yellow-emitting YAG:CE phosphor's particle size on the optical efficiency of high-temperature conformal packaging Multi-chip White LED (MCW-LEDs) was presented and investigated. For obtaining this goal, the physical model of the conformal packaging MCW-LEDs is simulated by using Light Tools software. Then by varying the size of the yellow-emitting YAG:CE phosphor, its influence on the correlated color temperature deviation (Delta CCT), color rending index (CRI) and lumen output of 8500 K MCW-LEDs were analyzed investigated by using Light Tools and Mat lab software. The research results showed that Delta CCT, CRI, and lumen output of 8500 K MCW-LEDs are crucially influenced by varying the size of the yellow-emitting YAG:CE phosphor. These results could be considered as a prospective approach for improving white LED manufacturer.