Phosphor in glasses with Pb-free silicate glass powders as robust color-converting materials for white LED applications

摘要

Phosphor-in-glass (PiG) typed robust color converters were fabricated using Pb-free silicate glasses for high-power white LED applications. SiO_(2)-B_(2)O_(3)-RO(R velence Ba, Zn) glass powder showed good sintering behavior and high visible transparency under the sintering condition of 750 deg C for 30 min without noticeable interaction with phosphors. By simply changing the thickness of the PiG plate or mixing ratio of glass to Y_(3)Al_(5)O_(12):Ce~(3+) phosphor, CIE chromaticity coordinates of the LED can be easily controlled. Enhanced thermal quenching property of PiG compared to phosphor with conventional silicone resin suggests its prominent feasibility for high-power/high-brightness white LEDs.