金纳米核-壳结构(Au@SiO_(2))对铕元素的发光增强机制研究  

Mechanism of Au core-shell nanoparticle(Au@SiO_(2))enhancement of europium luminescence

作　　者：宋妍妍 龙江迷 赵国营 李永良[1] 蒋楠 陈晓波[1] SONG Yanyan;LONG Jiangmi;ZHAO Guoying;LI Yongliang;JIANG Nan;CHEN Xiaobo(Key Laboratory of Applied Optics Beijing Area Major,Department of Physics,Beijing Normal University,100875,Beijing,China;School of Materials Science and Engineer,Shanghai Institute of Technology,200235,Shanghai,China)

机构地区：[1]北京师范大学物理学系,应用光学北京市重点实验室,北京100875 [2]上海应用技术大学材料科学与工程学院,上海200235

出　　处：《北京师范大学学报（自然科学版）》2023年第6期951-955,共5页Journal of Beijing Normal University(Natural Science)

基　　金：国家自然科学基金资助项目(12204055)。

摘　　要：为了增强稀土有机薄膜的发光效果,在制备稀土发光薄膜过程中引入了金纳米核-壳结构(Au@SiO_(2)).利用滴铸法将不同浓度的Au@SiO_(2)滴在石英片上;利用旋涂法将Eu(dbm)_(3)phen.聚甲基丙烯酸甲酯(PMMA):CH_(2)Cl_(2)混合溶液旋涂在石英片上,制备成薄膜样品.通过对薄膜样品的性能表征后发现:引入Au@SiO_(2)后可增强薄膜的发光强度;激发和发光增强因子最大分别为279.1%和222.9%,同时延长了薄膜样品的荧光寿命.将Au@SiO_(2)引入稀土发光薄膜的制备过程中,能够有效地提升薄膜的发光性能,应用潜力较好.To enhance luminescence emitted by rare-earth organic thin films,gold nano core-shell structures(Au@SiO_(2))were introduced during preparation of rare-earth luminescent films.A drop-casting method was used,Au@SiO_(2)nanostructures with different molar concentrations were applied onto quartz slides.A mixture of Eu(dbm)_(3)phen:PMMA:CH_(2)Cl_(2)was then spin-coated onto quartz slides to fabricate thin films.Characterizations of these samples revealed that introducing Au@SiO_(2)significantly enhanced film luminescence intensity.Maximum excitation and luminescence enhancement factors were 279.1%and 222.9%respectively,with extended fluorescent lifetime.Incorporating Au@SiO_(2)into the fabrication process of rare-earth luminescent films effectively improves their luminous performance,with promising application potentials.

关 键 词：金纳米核-壳结构(Au@SiO_(2)) Au@SiO_(2)@Eu:PMMA发光薄膜 发光增强 表面等离子体 

分 类 号：O433.1[机械工程—光学工程]