Abstract
Ca-α-SiAlON:Eu2+ oxynitride phosphors are typical luminescent materials with a high thermal tolerance. A series of metaphosphate glass samples (50MO–50P2O5; mol%, M=Zn, Ca, and Ba) were prepared in order to investigate their ability to disperse Ca-α-SiAlON:Eu2+ phosphor powders. The glass structures of all of the samples were formed using Q2 species and composed in long chain networks by investigation of the NMR and Raman spectra. In the glass samples, SiAlON was dispersed until reaching 5 or 6mass%. The color due to irradiation by a blue LED (wavelength of 450nm) depended on the glass composition, concentration of SiAlON, and thickness of the composite. Regarding the glass formation and quantum efficiency, the BaP glass with between 3 and 4mass% SiAlON composite was determined to be the most suitable for use as a host material for white LEDs.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
