Strong luminescence enhancement of Li doped Y₂O₃:5 %Eu³⁺ phosphors

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• 作者：Y. N. Zhu ; G. H. Zheng ; X. Xin ; R. Zhuang&#8230
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：2
• 页码：1485-1488
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

Y₂O₃:5 %Eu3+, x %Li+(x = 0, 2, 5, 8, and 10) phosphor have been synthesized by the sol–gel method. The microstructure and luminescent properties were also investigated for all samples by X-ray diffraction, scanning electronic morphology, and photoluminescence measurement. The Li addition is beneficial to the enhancement of luminescent intensity, and the optimal Li content is 8 % for Y₂O₃:5 %Eu3+. The enhancement could be attributed to three factors: one is the lattice shrinking due to smaller Li ionic radius, secondly, the appearance of the oxygen vacancies, and thirdly, the reducing number of OH− group by doping with Li+ ions.