VUV excited luminescence of MGdF4:Eu (M=Na, K, NH4) |
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| Authors: | Fangtian You Shihua Huang Ye Tao |
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| Institution: | a Laboratory of Materials for Information Storage and Display, Institute of Optoelectronic Technology, Beijing Jiaotong University, Beijing 100044, Chinab Beijing Synchrotron Radiation Laboratory, Institute of High Energy Physics, Beijing 100039, China |
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| Abstract: | Eu3+-doped NaGdF4, KGdF4 and NH4GdF4 phosphors with little oxygen contamination have been synthesized by hydrothermal technique. The emission spectra show that the doped Eu3+ ions are located in noncentrosymmetric sites in the three compounds. The two-photon emission has been observed in NaGdF4:Eu3+ and KGdF4:Eu3+ compounds under VUV excitation from the ground states to higher 6GJ excited states of Gd3+ ions, while in Eu3+-doped NH4GdF4, emissions from 5D1,2,3 excited states of Eu3+ cannot be detected in the luminescence spectra. |
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| Keywords: | 61 80 Ba 78 55 Hx 82 20 Rp |
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