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Tb₄O₇纯度对Tb₃Al₅O₁₂发光性质的影响

Influence of Purity of Tb₄O₇ on Spectra of Tb₃Al₅O₁₂

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【Author】 Zhou Shihong, Shi Jinsheng, Zhang Jingjun, Yu Yaqin, Zhang Siyuan of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China)

【机构】中国科学院长春应用化学研究所稀土化学与物理重点实验室；中国科学院长春应用化学研究所稀土化学与物理重点实验室吉林长春130022；吉林长春130022；吉林长春130022；

【摘要】采用溶胶凝胶法用不同纯度的Tb4O7在非还原气氛下合成了Tb3Al5O12,并研究了最佳合成条件、电子能谱以及发光性质。结果表明:Tb3Al5O12最佳合成时间应不超过3h,最佳合成温度不超过900℃,提高Tb4O7的纯度,Tb3Al5O12中Tb3+的发光明显增强。更多还原

【Abstract】 Tb3Al5O12 was prepared by a solgel process in nonreducing atmosphere, using Tb4O7 with various purity as precursors. The ESR and the luminescence spectra were obtained and analyzed, and the best synthesis conditions were decided. It is shown that the best synthesis conditions were the synthesis time which is less than 3 h, and the synthesis temperature is less than 900 ℃. The luminescence intensity of Tb3+ increases with the increasing purity of Tb4O7.更多还原