CaO-SiO 2 绿光玻璃陶瓷荧光体的沉积组织结构对发光性质的影响

Calcium silicate glass-ceramic phosphor with green emission was evaluated. The effect of crystals precipitation microstructure on spectral properties was investigated by changing the holding time at melting temperature. With the in crease of holding duration, the amount ratio of luminous β-Ca2SiO4∶ Eu^2+ crystalline phase to glassy phase tended to be decreased, leading to a red-shift of the emission band and exhibiting more transparent of the glass-ceramic phosphor. The precipitation of SiO2 crystals in priority was proposed. The broad excitation band of the green-emitting glass-ceramic phosphors covers the wavelength from 270 to 440 nm, showing the potential for the high-power phosphor-converted LED.