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with ( Ce0. 67 -xGdxTb0. 33 ) MgAl11 O19 (0 ≤ x ≤0.37 ) composition were prepared by sol-gel processing. The preparation process, crystal structure and luminescent properties of the phosphor powders..., the luminescence at about 487 nm follows the contrary rule. Key words:phosphors; sol-gel; aluminates; luminescent materials; [全文内容正在添加中] ......
Effect of Sintering Time on Luminescent Properties of YAG:Ce3+ Phosphors Xiong Zhaoxian1,Wu Wei1,Qiu Hong1,Song Chunxiao1 (1.Department of Materials Science and Engineering, Xiamen University, Xiamen 361005, China) Abstract:Phosphors of yttrium aluminium garnet activated by cerium ion, a kind of yellow luminescent materials for white LED lighting, were synthesized via solid-state reaction......
of excitation and emission for the phosphors were also obtained by a spectrophotometer. Effect of processing parameters on the luminescent properties of the powders was systematically studied to result...Modification of Luminescent Properties of Red Sulphide Phosphors for White LED Lighting Chen Zhihui1,Xiong Zhaoxian1,Chen Yayong1,Song Chunxiao1 (1.Department of Materials Science and Engineering......
, the fluxes, and atmosphere on microstructure and particle morphology as well as luminescent properties of YAG:Ce3+ phosphor powders were studied by X-ray powder diffractometry, scanning electron microscopy... powders. Key words: YAG phosphor; polyacrylamide gel; crystallization; morphology; luminescent properties ......
Synthesis and Luminescent Properties of Ultra Fine Y2O3:Eu Powders with Sheet or Block Morphology李永绣,吴燕利,罗军明,孙伟丽,汪桂花,冯晓平摘 要:Ultrafine Y2O3∶Eu powders... that the morphology still remains on calcining. The luminescent spectra of Y2O3∶Eu sheet and block show a strong excitation at 226 nm on their excitation spectra, which is different from......
Synthesis and luminescent properties of Ce3+ doped LuAG nano-sized powders by mixed solvo-thermal method王林香1,2,3,尹民1,2,郭常新2,张慰萍21. Hefei National Laboratory for Physical Sciences at Microscale..." name="ChDivSummary">Polycrystalline LuAG:Ce3+(cerium3+-doped lutetium aluminum garnet) powders were prepared by mixed solvo-thermal method.Fourier-transform IR spectroscopy(FTIR) and X-ray diffraction......
these phosphors. The luminescent intensity increases as the temperature of heat treatment is increased. This study investigated the effects of the molar ratio of ethylene glycol to citric acid (Φ value... powders. An increase in Φ value leads to an increase in the rate of BAM phase formation. The photoluminescent intensity of the prepared phosphors increases with heating temperatures because of enhanced......
Synthesis and Properties of Luminescent Material La2O2CO3费晓燕,陶振卫,刘洁,余锡宾,赵永恒,吴红娥,朱憬煊摘 要:A novel rare earth luminescent material La2O2CO3 was synthesized successfully by sintering the mixture of La2(CO3)3 and KCl powders. The XRD results revealed that the additive KCl not only affected the crystal form and crystallinity of the final product, but also......
Preparation and luminescent properties of CaAl_2O_4:Eu~(3+),R~+(R=Li,Na,K) phosphors HONG Guangyan1,XU Jijing2,AN Baichao2,LI Guanghuan2,LONG Tao2,GAO Guimei2,GAN Shucai2,SONG Yanhua1 (1.Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China;2.College of Chemistry,Jilin University,Changchun 130026,China) Key words:phosphors; aluminates; Eu~(3......
. The particles are far smaller and narrower than those prepared by D-CP. In the impinging streams co-precipitation system, the luminescent intensity of YAG:Ce phosphor increases with the increase of liquid flow rate. The intensity firstly increases then decreases with the increasing Ce3+ doping content, and the maximum intensity is shown at 1.67% (molar fraction) Ce. Luminescent intensity gradually......
