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1. 重庆理工大学 光电信息学院 重庆,400054
2. 重庆大学 材料学院 重庆,400044
收稿日期:2013-08-16,
修回日期:2013-09-15,
纸质出版日期:2014-01-03
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金叶, 王庆平. 荧光粉<em>M</em>PO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>/Tb<sup>3+</sup> (<em>M</em>=La,Gd,Y) 的结构及发光性能研究[J]. 发光学报, 2014,35(1): 61-65
JIN Ye, WANG Qing-ping. Crystal Structure and Photoluminescence Properties of <em>M</em>PO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>/Tb<sup>3+</sup> (<em>M</em>=La,Gd,Y) Phosphors[J]. Chinese Journal of Luminescence, 2014,35(1): 61-65
金叶, 王庆平. 荧光粉<em>M</em>PO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>/Tb<sup>3+</sup> (<em>M</em>=La,Gd,Y) 的结构及发光性能研究[J]. 发光学报, 2014,35(1): 61-65 DOI: 10.3788/fgxb20143501.0061.
JIN Ye, WANG Qing-ping. Crystal Structure and Photoluminescence Properties of <em>M</em>PO<sub>4</sub>:Eu<sup>3+</sup>,Bi<sup>3+</sup>/Tb<sup>3+</sup> (<em>M</em>=La,Gd,Y) Phosphors[J]. Chinese Journal of Luminescence, 2014,35(1): 61-65 DOI: 10.3788/fgxb20143501.0061.
采用高温固相法合成了一系列
M
PO
4
:Eu
3+
,Bi
3+
(
M
=La,Gd,Y)及
M
PO
4
:Tb
3+
(
M
=La,Gd,Y)荧光粉材料,用X射线衍射(XRD)仪对样品结构进行了表征。所合成的LaPO
4
和GdPO
4
属单斜晶系,而YPO
4
属体心立方晶系。用Diamond软件对结构进行分析并绘出了晶胞结构。对样品发光性质的研究结果表明,虽然
M
PO
4
(
M
=La,Gd,Y)均属于正磷酸盐,但由于晶格结构不同,其发光性质也不同。立方晶系的YPO
4
更有利于掺入其中的稀土离子的发光,Bi
3+
离子的引入能够明显改善样品的发光性能。
M
PO
4
:Eu
3+
Bi
3+
/Tb
3+
(
M
=La
Gd
Y) phosphors were synthesized by conventional solid state reaction. The structures of the samples were characterized by X-ray diffraction (XRD). The results indicate that YPO
4
crystallizes is cubic structure while LaPO
4
and GdPO
4
are monoclinic structure. The difference between the emission spectra of YPO
4
:0.04Eu
3+
and LaPO
4
:0.04Eu
3+
indicates that the Eu
3+
ions occupy nonequivalent sites in differrent material. The cubic structure is better for the luminescence of the doped RE ions than monoclinic structure. YPO
4
:0.04Eu
3+
exhibits strong absorption at 394 nm and intense red emission. The same result can be obtained while the Eu
3+
ions are changed into Tb
3+
ions. The introduction of Bi
3+
ions can significantly improve the photoluminescence properties of the phosphors.
Rambabu U, Buddhudu S. Optical properties of LnPO4:Eu3+ (Ln=Y, La and Gd) powder phosphors[J]. Opt. Mater., 2001, 17(3):401-408.[2] Li Y, Shi Y, Wang Y. Crystal structure and photoluminescence properties of CaSr2Al2O6:Eu2+ phosphors[J]. ECS J. Solid State Sci. Technol., 2013, 2(9):R208-R212.[3] Luwang M N, Ningthoujam R S, Srivastava S K, et al. Disappearance and recovery of luminescence in Bi3+, Eu3+ codoped YPO4 nanoparticles due to the presence of water molecules up to 800 ℃[J]. J. Am. Chem. Soc., 2011, 133(9):2998-3004.[4] Zhang C, Liang H, Zhang S, et al. Efficient sensitization of Eu3+ emission by Tb3+ in Ba3La(PO4)3 under VUV-UV excitation: Energy transfer and tunable emission[J]. J. Phys. Chem. C, 2012, 116(30):15932-15937.[5] Fang Y, Xu A, Song R, et al. Systematic synthesis and characterization of single crystal lanthanide orthophosphate nanowires[J]. J. Am. Chem. Soc., 2003, 125(51):16205-16034.[6] Qi Z, Shi C, Zhang W, et al. Local structure and luminescence of nanocrystalline Y2O3:Eu[J]. Appl. Phys. Lett., 2002, 81(15):2857-2859.[7] Huang C, Chan T, Liu W, et al. Crystal structure of blue-white-yellow color-tunable Ca4Si2O7F2:Eu2+, Mn2+ phosphor and investigation of color tenability through energy transfer for single-phase white-light near-ultraviolet LEDs[J]. J. Mater. Chem., 2012, 22:20210-20216.[8] Hong G Y. Fundamental and Application of Rare Earth Luminescent Materials[M]. Beijing: Science Press, 2011:67.[9] Zhou J, Su M. Studies on the luminescence of Eu3+-doped lanthanum phosphate[J]. Chem. J. Chin. Univ.(高等化学学报), 1993, 14(3):314-316 (in Chinese).[10] Beall G W, Boatner L A, Mullica D F, et al. The structure of cerium orthophosphate, a synthetic analogue of monazite[J]. J. Inorg. Nucl. Chem., 1981, 43(1):101-105.[11] Li C X, Hou Z Y, Zhang C M, et al. Controlled synthesis of Ln3+(Ln=Tb, Eu, Dy) and V5+ ion-doped YPO4 nano-/microstructures with tunable luminescent colors[J]. Chem. Mater., 2009, 21(19):4598-4607.[12] Park W J, Jung M K, Im S J, et al. Phptoluminescence characteristics of energy transfer between Bi3+ and Eu3+ in LnVO4:Eu, Bi(Ln=Y, La, Gd)[J]. Colloids Surf. A, 2008, 373:313-314.[13] Park W J, Yoon S G, Yoon D H. Photoluminescence properties of Y2O3 co-doped with Eu and Bi compounds as red-emitting phosphor for white LED[J]. J. Electroceram., 2006, 17(1):41-44.
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