Study on VUV and UV Excitation Spectrum of GdVO4∶Eu3+

郑丽秋¹，戚泽明²，郭常新³，施朝淑⁴，张庆礼³，魏亚光²

(1.First Laboratory of Institute of Solid State Physics of Chinese Academy of Science,;
2.National Synchronous Radiation Laboratory, University of Science and Technology of China,;
3.Department of Physics, University of Science and Technology of China,;
4.Department of Physics, University of Science and Technology of China, Hefei 230026, China National Synchronous Radiation Laboratory, University of Science and Technology of China,)

Abstract:The photoluminescence spectra and excitation spectra in the vacuum ultraviolet (VUV) and ultraviolet (UV) spectra region of GdVO4∶Eu3+ were reported. The excitation and emission spectra indicate that GdVO4∶Eu3+ is a highly efficient phosphor for the excitation in the VUV and UV spectrum region. The excitation band in the VUV and UV spectrum region of 60～350 nm consists mainly of the absorption of host, which has obvious absorption of 4fn-15d of Eu3+ and Gd3+. In GdVO4∶Eu3+, there is the energy transfer： VO43-→Eu3+, Gd3+→Eu3+ and Gd3+→VO43-→Eu3+. Through the last two procedures, maybe the quantum cutting of Gd3+-Eu3+ occurs.

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