Rapid synthesis of phosphor-glass composites in seconds based on particle self-stabilization

Abstract

Phosphor-glass composites (PGC) are excellent candidates for highly efficient and stable photonic converters; however, their synthesis generally requires harsh procedures and long time, resulting in additional performance loss and energy consumption. Here we develop a rapid synthetic route to PGC within about 10 seconds, which enables uniform dispersion of Y3Al5O12:Ce3+ (YAG:Ce) phosphor particles through a particle self-stabilization model in molten tellurite glass. Thanks for good wettability between YAG:Ce micro-particles and tellurite glass melt, it creates an energy barrier of 6.94 × 105 zJ to prevent atomic-scale contact and sintering of particles in the melt. This in turn allows the generation of YAG:Ce-based PGC as attractive emitters with high quantum efficiency (98.4%) and absorption coefficient (86.8%) that can produce bright white light with luminous flux of 1227 lm and luminous efficiency of 276 lm W−1 under blue laser driving. This work shows a generalizable synthetic strategy for the development of functional glass composites.

Rational Design of Nitride Phosphor-In-Glass with Robust Stability and Photoluminescence Performance

“…It is necessary to find glasses with low melting point and a high refractive index as the matrix of the composite. According to existing glass research, the melting temperature of telluride glass is generally low between 600 and 800 °C Table S1 and Figure S1 describe the telluride glasses of different compositions prepared by us.…”

Ce:(Lu,Sr)3(Al,Si)5O12 transparent ceramics for high-power white LEDs/LDs with ultra-high luminance saturation threshold

“…White light emitting diodes or laser diodes (WLEDs/WLDs) have attracted significant attention for their environmentally friendly nature, small volume and long service life. 1–16 Currently, the main method for constructing WLEDs/WLDs is to combine a blue LED/LD chip or a blue laser source with a Ce 3+ :Y 3 Al 5 O 12 (Ce:YAG) material. 17,18 However, phosphors encapsulated by the traditional organic resin have low thermal conductivity (0.1–0.4 W m −1 K −1 ), and are easy to burn or carbonize at high temperatures, which are not suitable for high power LED or LD lighting.…”