Alternative TitlePreparation and spectrum characteristics of BaHfO3:Ce nano-powder by co-precipitation
刘晶; 马伟民; 闻雷; 李喜坤; 沈世妃; 郭易芬
Source Publication中国有色金属学报
Other AbstractThe processing technology of Ce doped-BaHfO3 nano-powders that is prepared by co-precipitation (with oxalic acid and ammonia as the precipitant, respectively) was investigated. XRD and TEM were employed to analyze the effects of different precipitates on the phase change, morphologies of powders and influences of Ce^3+ dopant content on the excitation and emission spectra of powders. The results show that spherical BaHfO3:Ce nano-powders are synthesized only at 900℃ for 2 h and the average diameter is about 15 nm with ammonia as precipitant. But using oxalic acid as precipitant, the powders have polygonal morphology after calcining at 1 000 ~C for 2 h and the average diameter is about 60 nm. Minor Ce^3+ has no effect on the crystal structure. The relative intensity of photoluminescence peak has the maximum value when the Ce^3+dopant content is 0.3% (mole fraction). The concentration quench occurs when the Ce^3+ dopant content exceeds 0.3%. The emission character is resulted from 5d→^2F5/2 and 5d→^2F7/2 transitions of Ce^3+ and both the excitation and emission spectra are wide band.
KeywordBaHfO3:Ce粉体 共沉淀法 Ce^3+掺杂量 光谱特性
Indexed ByCSCD
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Cited Times:4[CSCD]   [CSCD Record]
Document Type期刊论文
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GB/T 7714
刘晶,马伟民,闻雷,等. 共沉淀法制备BaHfO3:Ce纳米粉体及发光性能[J]. 中国有色金属学报,2008,18.0(008):1492-1497.
APA 刘晶,马伟民,闻雷,李喜坤,沈世妃,&郭易芬.(2008).共沉淀法制备BaHfO3:Ce纳米粉体及发光性能.中国有色金属学报,18.0(008),1492-1497.
MLA 刘晶,et al."共沉淀法制备BaHfO3:Ce纳米粉体及发光性能".中国有色金属学报 18.0.008(2008):1492-1497.
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