杨开禧;林林;徐森元;王哲哲;冯卓宏;郑志强;

• 1:福建师范大学物理与能源学院福建省量子调控与新能源材料重点实验室
• 2:福建省半导体光电材料及其高效转换器件协同创新中心

摘要(Abstract)：

采用晶种法合成了金纳米棒和共沉淀法制备了β-NaYF_4:Er⁽³⁺⁾,Yb(3+),Yb⁽³⁺⁾@SiO_2上转换纳米发光材料,并利用St9ber法制备了可溶于水的β-NaYF_4:Er(3+)@SiO_2上转换纳米发光材料,并利用St9ber法制备了可溶于水的β-NaYF_4:Er⁽³⁺⁾,Yb(3+),Yb⁽³⁺⁾@SiO_2@SiO_2纳米颗粒.利用上转换荧光光谱研究了不同浓度的金纳米棒对β-NaYF_4:Er(3+)@SiO_2@SiO_2纳米颗粒.利用上转换荧光光谱研究了不同浓度的金纳米棒对β-NaYF_4:Er⁽³⁺⁾,Yb(3+),Yb⁽³⁺⁾@SiO_2上转换红光(655 nm)和绿光(540,520 nm)发射的影响.得到当金纳米棒颗粒的掺杂浓度为0.03%时,对β-NaYF_4:Er(3+)@SiO_2上转换红光(655 nm)和绿光(540,520 nm)发射的影响.得到当金纳米棒颗粒的掺杂浓度为0.03%时,对β-NaYF_4:Er⁽³⁺⁾,Yb(3+),Yb⁽³⁺⁾@SiO_2的上转换发光增强最大.红光和绿光的最大增强因子分别为2.75和1.66.通过调控金纳米棒加入量,可以调节材料的上转换红绿光比.因此,这种纳米复合材料可以作为生物荧光标记,在很大程度上提高生物鉴定准确性,在生物医学检测等方面有着重要的应用前景.

关键词(KeyWords)： 上转换;金纳米棒;β-NaYF_4:Er~(3+),Yb~(3+);表面等离子激元

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金青年基金资助项目(11204039、51202033);; 福建省自然科学基金资助项目(2015J01243、2016J01213、2017J01399);; 福建省教育厅科技资助项目(JA13084)

作者(Authors): 杨开禧;林林;徐森元;王哲哲;冯卓宏;郑志强;

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