Author/Authors :
Yinqun LI، نويسنده , , Degang Deng، نويسنده , , Qian Wang، نويسنده , , Gaofeng LI، نويسنده , , Youjie HUA، نويسنده , , Guohua Jia، نويسنده , , Lihui Huang، نويسنده , , SHILONG ZHAO، نويسنده , , Huanping Wang، نويسنده , , Chenxia Li، نويسنده , , SHIQING XU?، نويسنده ,
Abstract :
A blue-emitting phosphor, Eu2+-activated Mg3Ca3(PO4)4 phosphor was synthesized by conventional solid-state reaction. X-ray powder diffraction (XRD) analysis confirmed the phase formation. Photoluminescence (PL) results showed that Mg3Ca3(PO4)4: Eu2+ could be efficiently excited by UV–visible light from 250 to 430 nm, which matched well with the emission wavelengths of near-UV and UV LED chips. The effects of the doped-Eu2+ concentration in Mg3Ca3(PO4)4: Eu2+ on the PL were also investigated. The result reveals that Mg3Ca3(PO4)4: Eu2+ is a potential blue-emitting phosphor for white LEDs.
Keywords :
Mg3Ca3(PO4)4: Eu2+ , Phosphors , Luminescence , white LEDs
