Co~(2+)掺杂YPO_4:Eu~(3+)荧光材料的水热合成及其发光性能
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摘要
采用水热法合成了Co2+掺杂YPO4:Eu3+荧光材料,并用XRD、XPS、FT-IR和荧光光谱对合成产物的晶体结构、元素价态和发光性能进行研究。结果表明,所合成样品均是纯相四方晶系磷钇矿结构的Co2+掺杂YPO4:Eu3+晶体,在紫外光激发下可有效地发射出Eu3+特征橙红色光,荧光寿命约为4.6ms。少量Co2+、Eu3+共掺杂对合成产物基质的物相组成和晶体结构并无明显影响,但对其发光性能却有重要影响,所制备YPO4:2%Eu3+,0.10%Co2+样品位于595nm处的发射峰强度比YPO4:2%Eu3+样品的提高了21.1%左右。
Co2+doped YPO4:Eu3+phosphors were successfully synthesized with hydrothermal method.The crystal structure,element valence state and luminescent properties of the as-synthesized samples were investigated by XRD,XPS,FT-IR and FL.The results show that all the samples from hydrothermal synthesis are single-phase Co2+doped YPO4:Eu3+crystals with tetragonal xenotime structure,they can effectively emit characteristic orange-red luminescence of Eu3+with UV light excitation,and the fluorescence lifetime is approximately 4.6ms.A small amount of Co2+and Eu3+codoping has less influence on phase composition and crystal structure of product matrix,but has a significant impact on its luminescent properties.The intensity of emission peak located at 595 nm of YPO4:2%Eu3+,0.10 %Co2+sample is about 21.1%higher than that of YPO4:2%Eu3+sample.
Co2+doped YPO4:Eu3+phosphors were successfully synthesized with hydrothermal method.The crystal structure,element valence state and luminescent properties of the as-synthesized samples were investigated by XRD,XPS,FT-IR and FL.The results show that all the samples from hydrothermal synthesis are single-phase Co2+doped YPO4:Eu3+crystals with tetragonal xenotime structure,they can effectively emit characteristic orange-red luminescence of Eu3+with UV light excitation,and the fluorescence lifetime is approximately 4.6ms.A small amount of Co2+and Eu3+codoping has less influence on phase composition and crystal structure of product matrix,but has a significant impact on its luminescent properties.The intensity of emission peak located at 595 nm of YPO4:2%Eu3+,0.10 %Co2+sample is about 21.1%higher than that of YPO4:2%Eu3+sample.
引文
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[2]Rodriguez-Liviano Sonia,Aparicio Francisco J,Rojas Teresa C,et al.Microwave-assisted synthesis and luminescence of mesoporous RE-doped YPO4(RE=Eu,Ce,Tb,and Ce+Tb)nanophosphors with lenticular shape[J].Crystal Growth&Design,2011,12(2):635-645.
[3]Chen Jiangchao,Meng Qingguo,May P Stanley,et al.Sensitization of Eu3+luminescence in Eu:YPO4 nanocrystals[J].The Journal of Physical Chemistry C,2013,117(11):5 953-5 962.
[4]杨锦瑜,罗林,苏玉长,等.高分子凝胶法合成YPO4:Sm3+纳米荧光材料的结构与光学性能[J].粉末冶金材料科学与工程,2014,19(3):493-498.
[5]Zheng Wei,Zhu Haomiao,Li Renfu,et al.Visible-to-infrared quantum cutting by phonon-assisted energy transfer in YPO4:Tm3+,Yb3+phosphors[J].Physical Chemistry Chemical Physics,2012,14(19):6 974-6 980.
[6]Angiuli F,Cavalli E,Belletti A.Synthesis and spectroscopic characterization of YPO4activated with Tb3+and effect of Bi 3+co-doping on the luminescence properties[J].Journal of Solid State Chemistry,2012,192:289-295.
[7]Huang Jinsong,Gao Rui,Lu Zhouguang,et al.Sol-gel preparation and photoluminescence enhancement of Li+and Eu3+Co-doped YPO4 nanophosphors[J].Optical Materials,2010,32(9):857-861.
[8]Balakrishnaiah R,Kim Dong Woo,Yi Soung Soo,et al.Effect of Al 3+ions on fluorescence properties of YPO4:Eu3+phosphors[J].Materials Letters,2009,63(23):2 063-2 066.
[9]Parchur A K,Ningthoujam R S.Preparation,microstructure and crystal structure studies of Li+co-doped YPO4:Eu3+[J].RSC Advances,2012,2(29):10 854-10 858.
[10]Wang D J,Xia S D,Yin M.Ab initio calculation of electronic structures and 4f-5d transitions of some rare earth ions doped in crystal YPO4[J].Journal of Rare Earths,2008,26(3):439-442.
[11]Atabaev Timur Sh,Jin Oh Seong,Lee Jong Ho,et al.Facile synthesis of bifunctional silica-coated core-shell Y2O3:Eu3+,Co2+composite particles for biomedical applications[J].RSC Advances,2012,2(25):9 495-9 501.
[12]Speight J G.Lange's handbook of chemistry[M].New York:McGraw-Hill,2005.
[13]Parchur A K,Ningthoujam R S.Behaviour of electric and magnetic dipole transitions of Eu3+5 D0→7 F0 and Eu-O charge transfer band in Li+co-doped YPO4:Eu3+[J].RSC Advances,2012,2(29):10 859-10 868.
[14]Guan Hangmin,Lv Changhe,Han Chengliang,et al.Luminescent and magnetism properties of YPO4:Eu3+octahedron microcrystals[J].Materials Letters,2012,81:92-94.
[15]Kochanowski Alexandra,Hoene Andreas,Patrzyk Maciej,et al.Examination of the inflammatory response following implantation of titanium plates coated with phospholipids in rats[J].Journal of Materials Science:Materials in Medicine,2011,22(4):1 015-1 026.
[16]Qi Jifa,Matsumoto Takahiro,Tanaka Masanori,et al.Europium silicate thin films on Si substrates fabricated by a radio frequency sputtering method[J].Journal of Physics D:Applied Physics,2000,33(16):2 074-2 078.
[17]刘琼,苏毅国,于洪生,等.水热法合成YPO4:Eu及基质的结构研究[J].中国稀土学报,2007,25(6):656-661.
[18]Zhang Yan,Xu Jiayue,Zhang Tingting.Synthesis and luminescence properties of Eu3+-doped Bi4Si3O12[J].Journal of Inorganic Materials,2011,26(12):1 341-1 344.
[19]刘成露,贾佩云,王芳,等.纳米棒束YPO4:Eu的合成及其发光性能[J].合成化学,2011,19(4):516-519.
[20]李珍,耿加强,柳巍.静电纺丝技术制备一维LaPO4:Eu3+红光微纳米纤维[J].无机材料学报,2011,26(3):271-274.
[21]吴珂,王乐,徐国堂,等.YVO4:Eu3+@YPO4纳米核壳结构荧光粉的水热合成及表征[J].无机材料学报,2012,27(7):706710.