光子学报, 2019, 48 (2): 0216002, 网络出版: 2019-03-23
表面等离子激元双增强β-NaYF4∶Er3+上转换研究
Study on Co-enhancement of Upconversion of β-NaYF4∶Er3+ by Surface Plasmon
上转换 表面等离子激元增强 光谱 银纳米立方颗粒 金纳米棒 β-NaYF4∶Er3+纳米颗粒 Upconversion Surface plasmon enhancement Spectrum Ag nanocubes Au nanorods β-NaYF4∶Er3+ nanoparticles
摘要
用共沉淀法制备了β-NaYF4∶Er3+纳米颗粒.通过化学还原法、晶种生长法分别制备银纳米立方颗粒及金纳米棒, 并将其掺杂到β-NaYF4∶2%Er3+纳米颗粒中形成复合体系, 利用表面等离子激元增强效应分别实现β-NaYF4∶Er3+上转换发光的激发和发射增强.当银纳米立方颗粒掺杂量为60 μL时, 上转换发光强度整体增强4.0倍; 当金纳米棒掺杂量为60 μL时, 上转换发光强度整体增强7.8倍.在此基础上, 将两种贵金属纳米颗粒同时掺杂到β-NaYF4∶Er3+纳米颗粒材料中, 实现了该材料上转换发光激发和发射双增强, 上转换发光强度增强了16.0倍.
Abstract
β-NaYF4∶Er3+ upconversion nanoparticles were prepared by using coprecipitation method. The Ag nanocubes prepared by chemical reduction method and the Au nanorods prepared by seed-mediated growth method were doped into β-NaYF4∶2%Er3+ nanoparticles to form nano-composites, respectively. Therefore the enhancements of upconversion luminescence on β-NaYF4∶Er3+ NPs were achieved through surface plasmon resonance. The enhancement was up to 4.0 times with 60 μL Ag nanocubes doped, while the enhancement was up to 7.8 times with 60 μL Au nanorods doped. Codoping Ag nanocubes and Au nanorods into β-NaYF4∶2%Er3+ nanoparticles, great enhancement of upconversion luminescence reaching 16.0 times was obtained via co-enhancement of excitation and emission.
黄海, 林林, 黄莉莉, 冯卓宏, 郑标, 王哲哲, 郑志强. 表面等离子激元双增强β-NaYF4∶Er3+上转换研究[J]. 光子学报, 2019, 48(2): 0216002. HUANG Hai, LIN Lin, HUANG Li-li, FENG Zhuo-hong, ZHENG Biao, WANG Zhe-zhe, ZHENG Zhi-qiang. Study on Co-enhancement of Upconversion of β-NaYF4∶Er3+ by Surface Plasmon[J]. ACTA PHOTONICA SINICA, 2019, 48(2): 0216002.