Title of article :
Broadband orange emission from Bi activated calcium fluorophosphate
Author/Authors :
Li، نويسنده , , Chen and Song، نويسنده , , Zhiguo and Qiu، نويسنده , , Jianbei and Li، نويسنده , , Yongjin and Wang، نويسنده , , Qi and Yang، نويسنده , , Zhengwen and Yin، نويسنده , , Zhaoyi and Yang، نويسنده , , Yong، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2014
Abstract :
Bi doped Ca5(PO4)3F phosphors were synthesized by the solid state reaction in air, and characterized by XRD and photoluminescence spectra. Including typical violet luminescence from Bi3+, broadband orange emission peaked at about 521 nm can be observed under UV light excitation. Emission data with the size available lattice sites suggest that there are two types of Bi, Bi3+ and Bi2+, in Ca5(PO4)3F lattice, and each locates on one of the two available Ca2+ sites. Bi2+ occupying Ca2+(1) sites is considered to be reduced from Bi3+ to Bi2+ and presents efficient orange emission.
Keywords :
A. Optical materials , D. Crystal structure , D. Luminescence
Journal title :
Materials Research Bulletin
Journal title :
Materials Research Bulletin
