金纳米核-壳结构(Au@SiO2)对铕元素的发光增强机制研究
Mechanism of Au core-shell nanoparticle(Au@SiO2)enhancement of europium luminescence
宋妍妍 1龙江迷 1赵国营 2李永良 1蒋楠 1陈晓波1
作者信息
- 1. 北京师范大学物理学系,应用光学北京市重点实验室,100875,北京
- 2. 上海应用技术大学材料科学与工程学院,200235,上海
- 折叠
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@SiO2).利用滴铸法将不同浓度的Au@SiO2滴在石英片上;利用旋涂法将Eu(dbm)3phen.聚甲基丙烯酸甲酯(PMMA):CH2C12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@SiO2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@SiO2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.
Abstract
To enhance luminescence emitted by rare-earth organic thin films,gold nano core-shell structures(Au@SiO2)were introduced during preparation of rare-earth luminescent films.A drop-casting method was used,Au@SiO2 nanostructures with different molar concentrations were applied onto quartz slides.A mixture of Eu(dbm)3phen:PMMA:CH2C12 was then spin-coated onto quartz slides to fabricate thin films.Characterizations of these samples revealed that introducing Au@SiO2 significantly enhanced film luminescence intensity.Maximum excitation and luminescence enhancement factors were 279.1％and 222.9％respectively,with extended fluorescent lifetime.Incorporating Au@SiO2 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@SiO2)/Au@SiO2@Eu∶PMMA发光薄膜/发光增强/表面等离子体Key words
Au@SiO2 core-shell/Au@SiO2@Eu∶PMMA luminescent film/luminescence enhancement/surface plasmon引用本文复制引用
出版年
2023
国家科技期刊平台
NSTL
万方数据