| 光谱学与光谱分析 |
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| Study on the Enhanced Luminescence of GdTaO4∶Eu3+ Phosphors by Li+ Codopant |
| FU Shang-yi, GU Mu*, LIU Xiao-lin, NI Chen, LIU Bo, HUANG Shi-ming |
| Shanghai Key Laboratory of Special Artificial Microstructure Materials and Technology, Department of Bohr Solid Physics, Tongji University, Shanghai 200092, China |
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Abstract The XRD, emission and IR transmission spectra of Li-doped GdTaO4∶Eu3+ phosphors were measured. Judd-Ofelt theory was applied, and the intensity parameters Ω2 of Eu3+ for optical transition were calculated. The results show that Li+ codoping can enhance the luminescence intensity of GdTaO4∶Eu3+. The intensity can be improved up to 1.7 and 1.5 times, respectively, when x=0.06 and 0.10. The phenomenon results not from the assumption that Li+ codopant can reduce the crystal symmetry of GdTaO4∶Eu3+ so as to relax the parity forbidden transition, but from the flux effect of Li+ codopant which can improve the crystallinity of GdTaO4∶Eu3+ and suppress the Gd2O3 and Ta2O5 hetero phases. Gd0.92-xLixTaO4∶Eu3+0.08 has not only quite a good crystallinity but also less Gd2O3 and Ta2O5 hetero phases when x=0.06 or 0.10. Therefore, their luminescence intensities can be improved evidently.
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Received: 2009-12-16
Accepted: 2010-03-18
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Corresponding Authors:
GU Mu
E-mail: mgu@tongji.edu.cn
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[1] Brixner L H. J. Electrochem. Soc.: Solid-State Sci. Technol., 1964, 111: 690.
[2] Blasse G, Bril A. J. Lumin., 1970, 3: 109.
[3] Blasse G. Chem. Phys. Lett., 1990, 173: 409.
[4] Li B, Gu Z N, Lin J H, et al. J. Mater. Sci., 2000, 35: 1139.
[5] Issler S L, Torardi C C. J. Alloys Compd., 1995, 229: 54.
[6] Li B, Gu Z N, Lin J H, et al. Mater. Res. Bull., 2000, 35: 1921.
[7] Liu B, Han K, Liu X L, et al. Solid State Commun., 2007, 144: 484.
[8] Liu L X, Kun H, Mu G, et al. Solid State Commun., 2007, 142: 680.
[9] Takeda T, Koshiba D, Kikkawa S J. J. Alloys Compd., 2006, 408: 879.
[10] Park J C, Moon H K, Kim D K. Appl. Phys. Lett., 2000, 77: 2162.
[11] Su Q, Lin J, Li B. J. Alloys Compd., 1995, 225: 120.
[12] Judd B R. Phys. Rev., 1962, 127: 750.
[13] Ofelt G S. J. Chem. Phys., 1962, 37: 511.
[14] CHEN Bao-jiu, WANG Hai-yu, E Shu-hua, et al(陈宝玖，王海宇，鄂书华，等). Chinese J. Lumin.(发光学报), 2001, 22: 139.
[15] WANG Ji-wei, SONG Hong-wei, XIA Hai-ping, et al(王绩伟，宋宏伟，夏海平，等). Journal of the Chinese Rare Earth Society(中国稀土学报), 2003, 21(2): 322.
[16] Mandarino J A. Can. Mineral., 1976, 14: 498.
[17] Boyer J C, Vetrone F, Capobianco J A, et al. J. Phys. Chem. B, 2004, 108: 20137.
[18] Oomen E W J L, van Dongen A M A. J. Non-Cryst. Solids, 1989, 111: 205.
[19] Blasse G. J. Solid State Chem.，1973，7: 169.
[20] Xu L L, Wei B, An W W, et al. J. Alloys Compd., 2008, 460: 525.
[21] Huang A P, Xu S L, Zhu M K, et al. Appl. Phys. Lett., 2003, 83: 3278. |
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