[1] Xu Guofang, Rao Haibo, Yu Xinmei et al.. The realization of white LEDs and the selection of phosphor materials［J］. Advanced Display, 2007, 78(8): 59～63

[2] Shen Yi, Wang Shaoyan. Research exhibition and application of up-conversion luminous materials［J］. J. Hebei Polytechnic University, 2009, 31(1): 76～79

[3] Y. Dwivedi, A. Rai, S. B. Rai. Intense white upconversion emission in Pr/Er/Yb codoped tellurite glass［J］. J. Appl. Phys., 2008, 104(4): 3509～3512

[4] J. E. C. Silva, G. F. Sa, P. A. Santa-Cruz. White light simulation by up-conversion in fluoride glass host［J］. J. Alloys and Compounds, 2002, 344(1-2): 260～263

[5] A. S. Gouveia-Neto, L. A. Bueno, R. F. Nascimento et al.. White light generation by frequency upconversion in Tm3+/Ho3+/Yb3+-codoped fluorolead germanate glass［J］. Appl. Phys. Lett., 2007, 91(9): 1114～1116

[6] A. S. Gouveia-Neto, L. A. Bueno, R. F. Nascimento et al.. Multiwavelength visible and white light generation by frequency upconversion emission in Tm/Ho/Yb triply codoped fluorogermanate glass-ceramic［J］. Phys. Chem. Glasses, 2009, 50(1): 37～40

[7] Yang Zhongmin, Jiang Zhonghong. Frequency upconversion emissions in layered lead-germanate-tellurite glasses for three-color display［J］. J. Non-Cryst. Solids, 2005, 351(30-32): 2576～2580

[8] Xu Shiqing, Wang Wei, Deng Degang et al.. Three-color upconversion luminescence of rare earth codoped oxyhalide tellurite glasses［J］. J. Rare. Earths, 2008, 26(6): 895～898

[9] M. J. Weber. Radiative and multiphonon relaxation of rare-earth ions in Y2O3［J］. Phys.Rev., 1968, 171(2): 283～291

[10] Tang Bin, Wang Zheng, Yang Yi et al.. Synthesis and luminescence properties of Er3+-doped transparent oxy-fluoride germinate glass ceramics［J］. Acta Optica Sinica, 2010, 30(8): 2344～2349

[11] Yang Yanmin, Yang Zhiping, Zhang Cangsheng et al.. Spectroscopic properties of Er3+ doped borate glass containing more silver［J］. Chin. J. Lumin., 2009, 30(1): 47～50

[12] L. L. Neindre, S. Jiang, B. C. Hwang et al.. Effect of relative alkali content on absorption linewidth in erbium-doped tellurite glasses［J］. J. Non-Cryst. Solids, 1999, 255(1): 97～102

[13] A. Jha, S. Shen, M. Naftaly et al.. Structural origin of spectral broadening of 1.5-μm emission in Er3+-doped tellurite glasses［J］. Phys. Rev. B, 2000, 62(10): 6215～6227

[14] S. Khatir, J. Bolka, B. Capoen et al.. Raman spectroscopic characterization of Er3+-doped tellurite-based glasses［J］. J. Mol. Struct., 2001, 563&564: 283～287

[15] H. Burger, K. Kneipp, H. Hobert et al.. Glass formation, properties and structure of glasses in the TeO2-ZnO system［J］. J. Non-Cryst. Solids, 1992, 151(1-2): 134～142

[16] Li Chenxia, Kang Juan, Zheng Fei et al.. Upconversion luminescence of Ho3+/Yb3+ codoped oxyfluoride silicate glass ceramics［J］. Chinese J. Lasers, 2009, 36(5): 1184～1189

[17] Cao Baosheng, Feng Zhiqing, He Yangyang et al.. Effect of Li3+ codoping on upconversion emissions of Er3+-doped TiO2［J］. Acta Optica Sinica, 2010, 30(7): 1861～1865

[18] T. Miyakawa, D. L. Dexter. Phonon sidebands, multiphonon relaxation of excited states, and phonon-assisted energy transfer between ions in solids［J］. Phys. Rev. B, 1970, 1(7): 2961～2969