Hydrothermal synthesis and luminescent properties of LnPO4:Tb,Bi (Ln=La,Gd) phosphors under UV/VUV excitation |
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| Authors: | Yuhua Wang Chunfang Wu |
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| Affiliation: | a Department of Materials Science, School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu Province, 730000, PR China
b Key Lab for Magnetism and Magnetic Materials of MOE, School of Physical Science and Technology, Lanzhou University, Lanzhou, Gansu Province, 730000, PR China |
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| Abstract: | Monoclinic LnPO4:Tb,Bi (Ln=La,Gd) phosphors were prepared by hydrothermal reaction and their luminescent properties under ultraviolet (UV) and vacuum ultraviolet (VUV) excitation were investigated. LaPO4:Tb,Bi phosphor and GdPO4:Tb phosphor showed the strongest emission intensity under 254 and 147 nm excitation, respectively, because of the different energy transfer models. In UV region, Bi3+ absorbed most energy then transferred to Tb3+, but in VUV region it was the host which absorbed most energy and transferred to Tb3+. |
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| Keywords: | 78.55.&minus m |
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