Hydrothermal Synthesis and characterization of CeO2: Eu3+ Nanopowders
CeO2 :Eu3+ powders(6mol％) were successfully prepared via the precursor,which were synthesizedby a hydrothermal method.The precursor was calcined from 500 to 800℃ and CeO2:Eu3+ powders were obtained.XRD analysis showed that the powders with pure cubic fluoritetype CeO2 phase was obtained at the calcination temperatures from 500 to 800℃.TG analysis showed the precursor is no weight loss when the calcination temperature is higher than 500℃. SEM indicated CeO2:Eu3+ powders were polygonal crystal.The PL measurements indicated the dependence of PL emission intensity on the calcination temperature．The excitation spectra of the CeO2：Eu3+ powders were dominated by a broad band at 300-390 nm，suggesting the efficient energy transfer from the O2--Ce4+ charge-transfer state to the doping Eu3+ in the CeO2:Eu3+ powders. The CeO2:Eu3+ powders with a 6at.％ concentration of Eu sintered at 800℃ revealed the strongest photoluminescence.
CeO2:Eu3+ hydrothermal method Photoluminescence precursor
Meng Zhou Xin Wang Guijun Jiang Qiang Liu Songtao Gu Haoquan Liu
Institute of Materials Science and Engineering, Ocean University of China, Qingdao China. 266100
国际会议
青岛
英文
597-600
2009-10-09（万方平台首次上网日期，不代表论文的发表时间）