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La₂O₃∶Sm发光粉的合成与发光性质的研究

Synthesis and Luminescent Properties of La₂O₃∶Sm Phosphor

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【Author】 Zhou Yonghui, Lin Jun*, Yu Min, Han Xiumei, Wang Shubin, Zhang Hongstitute 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】以La2O3和Sm2O3为原料,用碳酸盐沉淀法制备了La2O3:Sm3+发光粉,并分别用XRD,SEM和发光光谱及寿命进行了表征。La2O3晶相的形成温度为800℃,其发光强度随温度升高而增强。La2O3基质中Sm3+的最佳掺杂浓度为1.5%(摩尔分数)。更多还原

【Abstract】 Using metal nitrates La2O3 and Sm2O3 as the starting materials, La2O3∶Sm3+ powder phosphor was prepared by carbonate coprecipitaion method. The formation of La2O3 phase was characterized by Xray diffraction (XRD), SEM, photoluminescent spectrum and luminescent lifetime, respectively. It is shown that pure La2O3 phase is obtained at 800 ℃ according to the result of XRD, and the crystallization degree increases with the increasing the annealing temperature.更多还原