以尿素为沉淀剂,通过均匀沉淀技术制备前驱体颗粒,经后续煅烧获得分散性能良好的球形(Lu0.95Eu0.05)3Al5O12((Lu0.95Eu0.05)AG)荧光颗粒.通过调整尿素浓度实现了球形荧光颗粒尺寸的可控合成.在此基础上,采用FT-IR、TG/DTA、XRD、FE-SEM、TEM和PLE/PL对材料的合成、物相形成及荧光性能等进行一系列表征.分析结果表明:前驱体经较低的温度1100℃煅烧即可获得(Lu0.95Eu0.05)AG球形荧光颗粒,且该荧光颗粒具有高的理论密度,适于闪烁体材料的应用.在235 nm电荷迁移带(CTB)的激发下,(Lu0.95Eu0.05)AG石榴石于592 nm(Eu3+的5D0→7F1磁偶极子跃迁)处呈现优异的橙红光发射,其色坐标为(0.63,0.37).该荧光颗粒的发光强度随颗粒尺寸的增大而增强,荧光寿命随颗粒尺寸的增大而缩短.球形(Lu0.95Eu0.05)AG石榴石颗粒有望成为一类新型荧光材料,广泛应用于照明及显示领域.
参考文献
| [1] | Ikesue A;Aung YL.Synthesis and performance of advanced ceramic lasers[J].Journal of the American Ceramic Society,20066(6):1936-1944. |
| [2] | Dominik Wermus;Thomas Shaffner;Troy J. Siemers;John R. Thompson.Interplay of classical noise sources in the relaxation oscillations of an Nd:YAG laser[J].Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter,201112(12):3051-3059. |
| [3] | Chandran, Senthil Kumar;Paulraj, Rajesh;Ramasamy, P..Crystal growth, spectral, optical, laser damage, photoconductivity and dielectric properties of semiorganic L-cystine hydrochloride single crystal[J].Spectrochimica acta, Part A. Molecular and biomolecular spectroscopy,2015:432-437. |
| [4] | Prabhakar Rai;Min-Kyoung Song;Hyeon-Min Song.Synthesis, growth mechanism and photoluminescence of monodispersed cubic shape Ce doped YAG nanophosphor[J].CERAMICS INTERNATIONAL,20121(1):235-242. |
| [5] | Xu, Mengmeng;Zhang, Zhijun;Zhao, Jingtai;Zhang, Jiazhi;Liu, Zhiwei.Low temperature synthesis of monodispersed YAG:Eu crystallites by hydrothermal method[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2015:1075-1080. |
| [6] | Guo, K.;Huang, M.-L.;Chen, H.-H.;Yang, X.-X.;Zhao, J.-T..Comparative study on photoluminescence of amorphous and nano-crystalline YAG:Tb phosphors prepared by a combustion method[J].Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites,20121(1):88-92. |
| [7] | Y. Zorenko;T. Zorenko;V.V. Gorbenko;T. Voznyak;V. Savchyn;P. Bilski;A. Twardak.Peculiarities of luminescent and scintillation properties of YAG:Ce phosphor prepared in different crystalline forms[J].Optical materials,20128(8):1314-1319. |
| [8] | Jinkai Li;Ji-Guang Li;Zhongjie Zhang.Gadolinium Aiuminate Garnet (Gd_3Al_5O_(12)): Crystal Structure Stabilization via Lutetium Doping and Properties of the (Gd_(1-x)Lu_x)_3Al_5O_(12) Solid Solutions (x = 0-0.5)[J].Journal of the American Ceramic Society,20123(3):931-936. |
| [9] | Li JG;Li XD;Sun XD;Ikegami T;Ishigaki T.Uniform colloidal spheres for (Y1-xGdx)(2)O-3 (x=0-1): Formation mechanism, compositional impacts, and physicochemical properties of the oxides[J].Chemistry of Materials: A Publication of the American Chemistry Society,20086(6):2274-2281. |
| [10] | Ji-Guang Li;Takayasu Ikegami;Jong-Heun Lee;Toshiyuki Mori.Low-temperature fabrication of transparent yttrium aluminum garnet (YAG) ceramics without additives[J].Journal of the American Ceramic Society,20004(4):961-963. |
| [11] | Ji-Guang Li;Xiaodong Li;Xudong Sun.Monodispersed Colloidal Spheres for Uniform Y2O3:Eu~(3+) Red-Phosphor Particles and Greatly Enhanced Luminescence by Simultaneous Gd~(3+) Doping[J].The journal of physical chemistry, C. Nanomaterials and interfaces,200831(31):11707-11716. |
| [12] | Xiaojuan Xu;Xudong Sun;Hong Liu.Synthesis of Monodispersed Spherical Yttrium Aluminum Garnet (YAG) Powders by a Homogeneous Precipitation Method[J].Journal of the American Ceramic Society,201212(12):3821-3826. |
| [13] | Ravichandran D;Roy R;Chakhovskoi AG;Hunt CE;White WB;Erdei S.Fabrication of Y3Al5O12:Eu thin films and powders for field emission display applications[J].Journal of Luminescence: An Interdisciplinary Journal of Research on Excited State Processes in Condensed Matter,19974(4):291-297. |
| [14] | Hongshang peng;Hongwei Song;Baojiu Chen;Jiwei Wang;Shaozhe Lu;Xianggui Kong;Jiahua Zhang.Temperature dependence of luminescent spectra and dynamics in nanocrystalline Y_2O_3: Eu~(3+)[J].The Journal of Chemical Physics,20037(7):3277-3282. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%