Author/Authors :
Qiang Liu، نويسنده , , Yong Yuan، نويسنده , , Jiang Li، نويسنده , , Jing Liu، نويسنده , , Chen Hu، نويسنده , , Min Chen، نويسنده , , Li Lin، نويسنده , , Huamin Kou، نويسنده , , Yun Shi، نويسنده , , Wenbin Liu، نويسنده , , Haohong CHEN، نويسنده , , Yubai Pan، نويسنده , , Jingkun Guo، نويسنده ,
Abstract :
Transparent Eu:Y3Al5O12 (Eu:YAG) fluorescent ceramics were fabricated by the solid-state reaction method using commercial Y2O3, α-Al2O3 and Eu2O3 as starting powders. The influence of Eu3+ concentration on the microstructure and optical properties of the obtained ceramics was investigated. Microstructure results indicated that all the ceramics with different Eu3+ concentrations possessed clean grain boundaries and homogeneous grains with the size range from 16.7 μm to 19.9 μm. Both absorption and emission peak intensities strengthen with increasing Eu3+ concentration. The samples do not show concentration quenching for Eu3+ concentration above 0.7 at%, but the fluorescence properties are affected by the self-absorption of Eu3+ ions.
Keywords :
Fluorescence property , Eu:YAG transparent ceramics , microstructure , Solid-state reactive sintering
