Controllable precipitation and photoluminescence of efficient green-emitting crystalline phase from luminescent CaO-SiO2 glass-ceramic system
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Abstract:
A new kind of glass-ceramic phosphor, which contains crystalline phases with green emissions, is explored. The glassceramic is prepared through semi-melt-quenching procedure with a nominal composition of (Ca0.99Eu0.01)3Si2O7. The greenemitting crystals are precipitated and identified to be β-Ca2SiO4: Eu2+ which is responsible for 510 nm-peaked much broader band emissions holding at 1550 °C for half an hour. In terms of the available light scattering theory, the appearance of opaque is discussed by closely associating with size and morphology of luminous β-Ca2SiO4 crystalline phase in glass.
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This work has been supported by the National Natural Science
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