Luminescence enhancement due to energy transfer in ZnO nanoparticles and Eu^3 + ions co-doped silica

详细信息	查看全文 | 推荐本文 |

• 作者：Tao Lin^a ; ^b ; Xiao-wei Zhang^a ; ^b ; Yun-ji Wang^a ; ^b ; Jun Xu^a ; ^b ; ^{junxu@nju.edu.cn} ; Neng Wan^a ; ^b ; Jian-feng Liu^a ; ^b ; ^c ; Ling Xu^a ; ^b ; Kun-ji Chen^a ; ^b
• 关键词：Sol&ndash ; gel processes ; Luminescence ; Rare earth ions ; Nanostructured materials
• 刊名：Thin Solid Films
• 出版年：2012
• 期刊代码：78_00406090
• 类别：ph
• 出版时间：30 June, 2012
• 卷：520
• 期：17
• 页码：5815-5819
• 文件大小：790 K

摘要

SiO₂ thin films co-doped with ZnO nanoparticles and Eu^3 + ions were prepared by sol-gel method. The formation of nano-sized ZnO particles was confirmed by X-ray diffraction patterns and transmission electron microscopy. The characteristic emission bands from Eu^3 + ions can be observed at room temperature and the luminescence intensity is increased obviously by introducing ZnO nanoparticles into Eu^3 +-doped silica films. The integrated luminescence intensity is influenced by the concentration and size of ZnO particles, suggesting effective energy transfer from nano-sized ZnO to Eu^3 + ions. It is argued that the efficient luminescence enhancement occurs under the suitable Zn^2 + amount and annealing temperature.