Preparation, morphology and luminescence properties of Gd_2O_2S:Tb with different Gd_2O_3 raw materials
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摘要
The sulfide fusion method was used to synthesize Gd_2 O_2 S:Tb phosphors using commercial Gd_2 O_3 and freshly prepared Gd_2 O_3, respectively. The freshly prepared Gd_2 O_3 was synthesized from Gd_2 O(GO_3)_2·H_2 O precursor prepared by homogeneous precipitation method.The structure and morphology of the composites were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS). The result shows that the Gd_2 O_2 S:Tb phosphor prepared by commercial Gd2 O3(GOST-A) presents agglomerated particles with average particle size of2.1 μm; however, Gd_2 O_2 S:Tb produced from as-prepared Gd_2 O_3(GOST-B) tends to form regular hexagon particles with the average particle size of 1 μm. Furthermore, Gd3+and Tb3+ contents in GOST-B are higher than that in GOST-A. In addition, fluorescent properties were analyzed by fluorescent spectrophotometer. It is indicated that similar excitation and emission spectra can be obtained from the two phosphors, but the luminescence intensity of GOST-B is higher than that of GOST-A.
The sulfide fusion method was used to synthesize Gd_2 O_2 S:Tb phosphors using commercial Gd_2 O_3 and freshly prepared Gd_2 O_3, respectively. The freshly prepared Gd_2 O_3 was synthesized from Gd_2 O(GO_3)_2·H_2 O precursor prepared by homogeneous precipitation method.The structure and morphology of the composites were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS). The result shows that the Gd_2 O_2 S:Tb phosphor prepared by commercial Gd2 O3(GOST-A) presents agglomerated particles with average particle size of2.1 μm; however, Gd_2 O_2 S:Tb produced from as-prepared Gd_2 O_3(GOST-B) tends to form regular hexagon particles with the average particle size of 1 μm. Furthermore, Gd3+and Tb3+ contents in GOST-B are higher than that in GOST-A. In addition, fluorescent properties were analyzed by fluorescent spectrophotometer. It is indicated that similar excitation and emission spectra can be obtained from the two phosphors, but the luminescence intensity of GOST-B is higher than that of GOST-A.
The sulfide fusion method was used to synthesize Gd_2 O_2 S:Tb phosphors using commercial Gd_2 O_3 and freshly prepared Gd_2 O_3, respectively. The freshly prepared Gd_2 O_3 was synthesized from Gd_2 O(GO_3)_2·H_2 O precursor prepared by homogeneous precipitation method.The structure and morphology of the composites were characterized by X-ray diffraction(XRD), scanning electron microscopy(SEM) and energy dispersive spectroscopy(EDS). The result shows that the Gd_2 O_2 S:Tb phosphor prepared by commercial Gd2 O3(GOST-A) presents agglomerated particles with average particle size of2.1 μm; however, Gd_2 O_2 S:Tb produced from as-prepared Gd_2 O_3(GOST-B) tends to form regular hexagon particles with the average particle size of 1 μm. Furthermore, Gd3+and Tb3+ contents in GOST-B are higher than that in GOST-A. In addition, fluorescent properties were analyzed by fluorescent spectrophotometer. It is indicated that similar excitation and emission spectra can be obtained from the two phosphors, but the luminescence intensity of GOST-B is higher than that of GOST-A.
引文
[1] Wang F, Liu DC, Yang B,Zhang JC,Dai YN. Influence of Dy~(3+)coactivator on the luminescence properties of Gd_2O_2S:Tb phosphor. J Appl Phys. 2012; 111(2):1.
[2] Brito HF, Malta OL, Felinto MCFC, Teotonio EES. The Chemistry of Metal Enolate. In:Zabicky J, editor. Chichester,England:Wiley; 2009. 131.
[3] Kumar GA, Pokhrel M, Sardar DK. Absolute quantum yield measurements in Yb/Ho doped M_2O_2S(M=Y, Gd,La)upconversion phosphor. Mater Let. 2013;98:63.
[4] Chatterjee S, Shanker V, Chander H. Thermoluminescence of Tb doped Gd_2O_2S phosphor. Mater Chem Phys. 2003;80(3):719.
[5] Wang F, Chen XM, Liu DC, Yang B, Dai YN. Experimental and theoretical study of pure and doped crystals:Gd_2O_2S, Gd_2O_(2-)S:Eu~(3+)and Gd202S:Tb3+. J Mol Struct. 2012; 1020:153.
[6] Park IY, Kim DJ, Lee JW, Lee S, Kim KJ. Effects of urea concentration and reaction temperature on morphology of gadolinium compounds prepared by homogeneous precipitation.Mater Chem Phys. 2007; 106(1):149.
[7] Hirai T, Hirano T, Komasawa I. Preparation of Gd_2O_3:Eu~(3+)and Gd_2O_2S:Eu~(3+)phosphor fine particles using an emulsion liquid membrane system. J Colloid Interface Sci. 2002;253(1):62.
[8] Cho SH, Yoo JS, Lee JD. A new synthetic method to prepare spherical phosphors for emissive screen application. J Electronchem Soc. 1998; 145(3):1017.
[9] Yoo HS, Jang HS, Im WB, Kang JH, Jeon DY. Particle size control of a monodisperse spherical Y_2O_3:Eu~(3+)phoaphor and its photoluminescence properties. J Mater Res. 2007;22(7):2017.
[10] Zhao F, Gao S. Pyrolysis of single molecular precursor for monodisperse lanthanide sulfide/oxy sulfide nanocrystals.J Mater Chem. 2008; 18(9):949.
[11] Li IF, Su CH, Sheu HS, Chiu HC, Lo YW, Lin WT, Chen JH,Yeh CS. The Gd_2O(CO_3)_2·H_2O particles and the corresponding Gd_2O_3:synthesis and applications of magnetic resonance contrast agents and template particles for hollow spheres and hybrid composites. Adv Funct Mater. 2008; 18(5):766.
[12] Kazo N, Hisanobu W, Akihiko M. The synthesis of crystalline rare earth carbonates. Bull Chem Soc Jpn. 1973;46(1):152.
[13] Raju GS, Pavitra E, Yu JS. Facile template free synthesis of Gd_2O(CO_3)_2·H_2O chrysanthemum-like nanoflowers and luminescence properties of corresponding Gd_2O_3:RE~(3+)spheres.Dalton Trans. 2013;42(32):11400.
[14] Liu H, Zhang SG, Pan DA, Liu YF, Liu B, Tian JJ, Volinsky AA. Mechanism of CeMgAl_(11)O_(19):Tb~(3+)alkaline fusion with sodium hydroxide. Rare Met. 2015;34(3):189.
[15] Mayama Y, Masui T, Koyabu K, Imanaka N. Enhancement of the luminescent intensity of the green emitting Gd_2O_2CO_3:Tb phosphor. J Alloys Compd. 2008;451(1-2):132.
[16] Popovici EJ,Muresan L, Hristea-Simoc A, Indrea E, Vasilescu M, Nazarov M, Jeon DY. Synthesis and characterization of rare earth oxysulfide phosphors, I. Studies on the preparation of Gd_2O_2S:Tb phosphor by the flux method. Opt Mater.2004;27(3):559.
[17] Zhang T, Gu J, Ding Y, Zhang YW, Yan CH. Experimental and theoretical studies on the controlled synthesis of alkali-metaldoped rare-earth oxysulfide nanocrystals. ChemPlusChem.2013;78(6):515.
[18] Hussein GAM. Formation, characterization, and catalytic activity of gadolinium oxide, infrared spectroscopic studies.J Phys Chem. 1994;98(38):9657.
[19] Bhargava RN, Chhabra V, Kulkarni B, Veliadis JV. Transformation of deep impurities to shallow impurities. Phys Stat Sol B.1998;210(2):621.
[20] Luo XX, Cao WH, Tian Y. Characteristic and synthesis mechanism of Gd202S:Tb phosphors prepared by cold isostatic press pretreatment. Opt Mater. 2007;30(2):351.
[21] Yan X, Fern GR, Withnall R, Silver J. Effect of the host lattice and doping concentration on the colour of Tb3+cation emission in Y_2O_2S:Tb~(3+)and Gd_2O_2S:Tb~(3+)nanometer sized phosphor particles. Nanoscale. 2013;5(18):8640.
[22] Shea LE, McKittrick J. Predicting and modeling the low-voltage cathodoluminescent efficiency of oxide phosphors. J Electrochem Soc. 1998;145(9):3165.
[23] Ohno K, Abe T. The synthesis and particle growth mechanism of bright green phosphor YAG:Tb. J Electronchem Soc.1994;141(5):1252.
[2] Brito HF, Malta OL, Felinto MCFC, Teotonio EES. The Chemistry of Metal Enolate. In:Zabicky J, editor. Chichester,England:Wiley; 2009. 131.
[3] Kumar GA, Pokhrel M, Sardar DK. Absolute quantum yield measurements in Yb/Ho doped M_2O_2S(M=Y, Gd,La)upconversion phosphor. Mater Let. 2013;98:63.
[4] Chatterjee S, Shanker V, Chander H. Thermoluminescence of Tb doped Gd_2O_2S phosphor. Mater Chem Phys. 2003;80(3):719.
[5] Wang F, Chen XM, Liu DC, Yang B, Dai YN. Experimental and theoretical study of pure and doped crystals:Gd_2O_2S, Gd_2O_(2-)S:Eu~(3+)and Gd202S:Tb3+. J Mol Struct. 2012; 1020:153.
[6] Park IY, Kim DJ, Lee JW, Lee S, Kim KJ. Effects of urea concentration and reaction temperature on morphology of gadolinium compounds prepared by homogeneous precipitation.Mater Chem Phys. 2007; 106(1):149.
[7] Hirai T, Hirano T, Komasawa I. Preparation of Gd_2O_3:Eu~(3+)and Gd_2O_2S:Eu~(3+)phosphor fine particles using an emulsion liquid membrane system. J Colloid Interface Sci. 2002;253(1):62.
[8] Cho SH, Yoo JS, Lee JD. A new synthetic method to prepare spherical phosphors for emissive screen application. J Electronchem Soc. 1998; 145(3):1017.
[9] Yoo HS, Jang HS, Im WB, Kang JH, Jeon DY. Particle size control of a monodisperse spherical Y_2O_3:Eu~(3+)phoaphor and its photoluminescence properties. J Mater Res. 2007;22(7):2017.
[10] Zhao F, Gao S. Pyrolysis of single molecular precursor for monodisperse lanthanide sulfide/oxy sulfide nanocrystals.J Mater Chem. 2008; 18(9):949.
[11] Li IF, Su CH, Sheu HS, Chiu HC, Lo YW, Lin WT, Chen JH,Yeh CS. The Gd_2O(CO_3)_2·H_2O particles and the corresponding Gd_2O_3:synthesis and applications of magnetic resonance contrast agents and template particles for hollow spheres and hybrid composites. Adv Funct Mater. 2008; 18(5):766.
[12] Kazo N, Hisanobu W, Akihiko M. The synthesis of crystalline rare earth carbonates. Bull Chem Soc Jpn. 1973;46(1):152.
[13] Raju GS, Pavitra E, Yu JS. Facile template free synthesis of Gd_2O(CO_3)_2·H_2O chrysanthemum-like nanoflowers and luminescence properties of corresponding Gd_2O_3:RE~(3+)spheres.Dalton Trans. 2013;42(32):11400.
[14] Liu H, Zhang SG, Pan DA, Liu YF, Liu B, Tian JJ, Volinsky AA. Mechanism of CeMgAl_(11)O_(19):Tb~(3+)alkaline fusion with sodium hydroxide. Rare Met. 2015;34(3):189.
[15] Mayama Y, Masui T, Koyabu K, Imanaka N. Enhancement of the luminescent intensity of the green emitting Gd_2O_2CO_3:Tb phosphor. J Alloys Compd. 2008;451(1-2):132.
[16] Popovici EJ,Muresan L, Hristea-Simoc A, Indrea E, Vasilescu M, Nazarov M, Jeon DY. Synthesis and characterization of rare earth oxysulfide phosphors, I. Studies on the preparation of Gd_2O_2S:Tb phosphor by the flux method. Opt Mater.2004;27(3):559.
[17] Zhang T, Gu J, Ding Y, Zhang YW, Yan CH. Experimental and theoretical studies on the controlled synthesis of alkali-metaldoped rare-earth oxysulfide nanocrystals. ChemPlusChem.2013;78(6):515.
[18] Hussein GAM. Formation, characterization, and catalytic activity of gadolinium oxide, infrared spectroscopic studies.J Phys Chem. 1994;98(38):9657.
[19] Bhargava RN, Chhabra V, Kulkarni B, Veliadis JV. Transformation of deep impurities to shallow impurities. Phys Stat Sol B.1998;210(2):621.
[20] Luo XX, Cao WH, Tian Y. Characteristic and synthesis mechanism of Gd202S:Tb phosphors prepared by cold isostatic press pretreatment. Opt Mater. 2007;30(2):351.
[21] Yan X, Fern GR, Withnall R, Silver J. Effect of the host lattice and doping concentration on the colour of Tb3+cation emission in Y_2O_2S:Tb~(3+)and Gd_2O_2S:Tb~(3+)nanometer sized phosphor particles. Nanoscale. 2013;5(18):8640.
[22] Shea LE, McKittrick J. Predicting and modeling the low-voltage cathodoluminescent efficiency of oxide phosphors. J Electrochem Soc. 1998;145(9):3165.
[23] Ohno K, Abe T. The synthesis and particle growth mechanism of bright green phosphor YAG:Tb. J Electronchem Soc.1994;141(5):1252.