Construction of order mesoporous (Eu-La)/ZnO composite material and its luminescent characters

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• 作者：Na Bao^a ; Yu Liu^a ; Zi -Wei Li^a ; Hui Yu^a ; ^{yh2001101@163.com" class="auth_mail" title="E-mail the corresponding author} ; Hao-tian Bai^a ; Long Xia^b ; ^{xialong_aron@163.com" class="auth_mail" title="E-mail the corresponding author} ; Da-wei Feng^c ; ^d ; Hong-bo Zhang^a ; Xiang-ting Dong^a ; Tian-yang Wang^a ; Ji Han^a ; Rong-yi Wu^a ; Qi Zhang^a
• 关键词：Order mesoporous ZnO ; Rare earth ; Eu and La ; Composite ; Luminescence
• 刊名：Journal of Luminescence
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：177
• 期：Complete
• 页码：409-415
• 全文大小：1140 K

文摘

For the first time, the order mesoporous zinc oxide was synthesized by a soft template synthesis method. The Eu and La phosphate were introduced into the prepared mesoporous zinc oxide by the high temperature solid phase method, and got the mesoporous rare earth/zinc oxide composite materials. The luminescence characters of the materials were studied. The influences of La to Eu luminescent properties had been studied, and the optimum proportion of Eu and La was discussed. The influences of La and Eu to ZnO luminescence properties were also been studied. La phosphate had the large influence to Eu luminescent. ZnO had a strong emission peak at 469 nm, which overlapped with the ⁷F₀–⁵D₂ transition excitation peak of Eu at 465 nm. It indicated that the effective energy transfer happened between ZnO and Eu, which strongly enhanced the luminescence intensity of Eu. At the same time, the Eu and La phosphates could regulate the defect density of ZnO, which could regulate the luminescent intensity of ZnO, and realized the adjustment of luminescent color between green and red light.