Author/Authors :
Yu، نويسنده , , Xue and Xu، نويسنده , , Xuhui and Yang، نويسنده , , Penghui and Yang، نويسنده , , Zhengwen and Song، نويسنده , , Zhiguo and Zhou، نويسنده , , Dacheng and Yin، نويسنده , , Zhaoyi and Jiao، نويسنده , , Qing and Qiu، نويسنده , , Jianbei، نويسنده ,
Abstract :
CaAl2Si2O8:Eu anorthite phosphor was synthesized by the traditional solid state reaction. In the air-sintered phosphor, the Eu ions were partial self-reduced to Eu2+, which contributed to the observation of the blue (Eu2+) and the red (Eu3+) emission in CaAl2Si2O8:Eu phosphor. To further investigate the photoluminescence properties and the self-reduction mechanism of CaAl2Si2O8:Eu phosphor, the adjustment of the valence state of Eu ions by controllable approaches was studied. In addition, CaAl2Si2O8:Eu phosphor shows a tunable emission from reddish to bluish region under ultraviolet excitation, which implies that it could be applied as potential phosphor for near ultraviolet light emitting diode.
