YELLOW-EMITTING YAG:Ce PHOSPHOR: INFLUENCE OF PARTICLESIZE ON OPTICAL EFFICIENCY OF THE HIGH COLORTEMPERATURE CONFORMAL PACKAGING WLEDs

摘要

In this paper, the influence of the yellow-emitting YAG:CE phosphor’s particle size on theoptical efficiency of high-temperature conformal packaging Multi-chip White LED(MCW-LEDs) was presented and investigated. For obtaining this goal, the physical modelof the conformal packaging MCW-LEDs is simulated by using Light Tools software. Thenby varying the size of the yellow-emitting YAG:CE phosphor, its influence on thecorrelated color temperature deviation (ΔCCT), color rending index (CRI) and lumenoutput of 8500 K MCW-LEDs were analyzed investigated by using Light Tools and Matlab software. The research results showed that ΔCCT, CRI, and lumen output of 8500 KMCW-LEDs are crucially influenced by varying the size of the yellow-emitting YAG:CEphosphor. These results could be considered as a prospective approach for improvingwhite LED manufacturer.