Yongzhang Jiang, Haiping Xia, Shuo Yang, Jiazhong Zhang, Dongsheng Jiang, Cheng Wang, Zhigang Feng, Jian Zhang, Xuemei Gu, Jianli Zhang, Haochuan Jiang, Baojiu Chen. Luminescence of Tb3+/Eu3+ codoped LiYF4 single crystals under UV excitation for white-light LEDs[J]. Chinese Optics Letters, 2015, 13(7): 071601
- Chinese Optics Letters
- Vol. 13, Issue 7, 071601 (2015)
Fig. 1. Powder XRD pattern of Tb 3 + / Eu 3 + LiYF 4 LiYF 4 LiYF 4
Fig. 2. Absorption spectra of Samples T0 and TE0, and the un-doped crystals (marked a, b, and c, respectively).
Fig. 3. Emission spectra of Samples T0 and TE0 under 374 nm excitation.
Fig. 4. Excitation spectra of Sample TE0 monitored at 487, 542, and 611 nm wavelengths.
Fig. 5. Emission spectra of Sample TE0 under various excitation wavelengths (353, 362, 374, and 384 nm).
Fig. 6. Emission spectra of various Tb 3 + / Eu 3 + LiYF 4
Fig. 7. CIE chromaticity coordinates diagram for Samples TE i i = 0 – 4
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Table 1. Concentrations of Tb3+ and Eu3+ Ions in LiYF4 Single Crystalsa
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Table 2. Luminous Parameters of Samples TEia
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