Photoluminescence properties of Y 0.95 − xM xBO 3:Eu 3+ (M = Ca, Sr, Ba, Zn, Al, 0 ≤ x ≤ 0.1) in 100–450 nm regions

Abstract

The single phases of Y 0.95 − x M x BO 3:5%Eu 3+ (M = Ca, Sr, Ba, Zn, Al, 0 ≤ x ≤ 0.1) were synthesized successfully by solid-state reaction. Their luminescent properties were studied under UV and VUV excitation. The results indicated that with the incorporation of Ca 2+, Sr 2+, Ba 2+, Zn 2+ or Al 3+ into the host lattice of YBO 3:Eu 3+, the high symmetry around Eu 3+ was destroyed and the ratio of red emission( 5D 0– 7F 2) to orange one ( 5D 0– 7F 1) increased, leading to a better chromaticity. Furthermore, the co-doping ions such as Ca 2+, Zn 2+ and Al 3+ were beneficial to enhance the luminescent intensity of Eu 3+. These phenomena were evaluated, and possible explanations were proposed.