Photoluminescence properties of Y0.95 − xMxBO3:Eu3+ (M = Ca, Sr, Ba, Zn, Al, 0 ≤ x ≤ 0.1) in 100–450 nm regions

The single phases of Y0.95 − xMxBO3:5%Eu3+ (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 Ca2+, Sr2+, Ba2+, Zn2+ or Al3+ into the host lattice of YBO3:Eu3+, the high symmetry around Eu3+ was destroyed and the ratio of red emission(5D0–7F2) to orange one (5D0–7F1) increased, leading to a better chromaticity. Furthermore, the co-doping ions such as Ca2+, Zn2+ and Al3+ were beneficial to enhance the luminescent intensity of Eu3+. These phenomena were evaluated, and possible explanations were proposed.