Alternative TitlePreparation and Luminescence Characteristics of Nano BaHfO3:Ce^3+ Powders Prepared by Citric Acid Chelating Process
王华栋; 马伟民; 闻雷; 尹凯; 沈世妃
Source Publication稀有金属材料与工程
Other AbstractCitric acid chelating method was used to prepare Ce^3+ doped BaHfO3 nano-powder. TG-DTA, XRD and SEM were employed to characterize the powder. The excitation and emission spectra of the specimens were analyzed by the fluorescence photometer. Results show that BaHfO3:Ce^3+ nanometer powder with high degree of crystallinity, nearly spherical morphology and 40 nm particle size could be synthesized after the precursor gel prepared under the condition of CA:EG=1:3 was calcined at 1050 ℃ for 2 h. The maximum relative intensities of the excitation spectra and emission spectra appeared for the BaHfO3:Ce^3+ specimen with Ce^3+ doped concentration of 0.9 mol%. The excitation spectrum has two relatively wide spectrum bands where there are maximum peak values at the wavelength of 393 nm and 445 nm, respectively. The emission spectra at λex= 393 nm and λex=445 nm also have two spectrum bands where exist maximum peak values at 530 nm and 590 nm, respectively, corresponding to 5d→^2F5/2 and 5d→^2F7/2 transitions of Ce^3+ cation, respectively. The emission spectra at 393 nm and 445 nm are obviously different, because the 4f ground State of Ce^3+ cation is formed by two energy levels, with the energy difference of about 2000 cm^-1.
Keyword闪烁陶瓷 柠檬酸 sol-gel法 BaHfO3:Ce^3+纳米粉体 发光特性
Indexed ByCSCD
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Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
王华栋,马伟民,闻雷,等. 柠檬酸螯合法制备BaHfO3:Ce^3+纳米材料及其发光特性[J]. 稀有金属材料与工程,2009,38.0(008):1446-1449.
APA 王华栋,马伟民,闻雷,尹凯,&沈世妃.(2009).柠檬酸螯合法制备BaHfO3:Ce^3+纳米材料及其发光特性.稀有金属材料与工程,38.0(008),1446-1449.
MLA 王华栋,et al."柠檬酸螯合法制备BaHfO3:Ce^3+纳米材料及其发光特性".稀有金属材料与工程 38.0.008(2009):1446-1449.
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