We proposed an optical model for phosphor-converted white LEDs (pc-WLEDs) that utilized Ce:YAG doped glasses as novel phosphor-converted materials. In this model, precise simulation of the chromatic performance of the glass-based pc-WLEDs was conducted. Between optical simulation and experimental measurement, the color difference ΔE was 1.2%. Meanwhile, the difference of correlated color temperature limited from 1 wt% to 5 wt% phosphor concentration between the simulation and measurement was 184 K. Such a model for glass phosphors will be helpful to design high-power glass-based pc-WLEDs.
© 2013 IEEE
Li-Yin Chen, Jin-Kai Chang, Yi-Ru Wu, Wei-Chih Cheng, Ji-Hung Chen, Chun-Chin Tsai, and Wood-Hi Cheng, "Optical Model for Novel Glass-Based Phosphor-Converted White Light-Emitting Diodes," J. Display Technol. 9, 441-446 (2013)