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Photoluminescence properties of Eu in Y(PO3)3 under VUV excitation
Authors:Dan Wang  Yuhua Wang  Yurong Shi
Institution:a Department of Materials Science, Lanzhou University, Lanzhou 730000, China
b Key Laboratory for Magnetism and Magnetic Materials of the Ministry of Education, Lanzhou University, Lanzhou 730000, China
Abstract:The photoluminescence properties of Y1−x(PO3)3:xEu3+ (0<x≤0.2) are investigated. The excitation spectrum of Y0.85(PO3)3:0.15Eu3+ shows that both the (PO3)33− groups and the CT bands of O2−-Y3+ can efficiently absorb the excitation energy in the region of 120-250 nm. Under 147 nm excitation, the optimal emissive intensity of Y1−x(PO3)3:xEu3+ (0<x≤0.2) is about 36% of the commercial phosphor (Y,Gd)BO3:Eu3+, which hints that the absorbed energy by the host matrix could be efficiently transferred to Eu3+. We try to study the concentration quenching mechanism of Y1−x(PO3)3:xEu3+ (0<x≤0.2) under 147 and 172 nm excitation.
Keywords:Photoluminescence properties  VUV  Y(PO3)3:Eu3+
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