| Na_3ZrF_7:Er/Yb纳米颗粒的合成及荧光性能研究 |
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| 引用本文： | 庾名槐,王广盛,叶帅,宋军,屈军乐.Na_3ZrF_7:Er/Yb纳米颗粒的合成及荧光性能研究[J].人工晶体学报,2017(9):1691-1696. |
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| 作者姓名： | 庾名槐 王广盛 叶帅 宋军 屈军乐 |
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| 作者单位： | 1. 深圳大学光电工程学院,光电子器件与系统教育部/广东省重点实验室,深圳518060;海南大学材料与化工学院,海口 570228;2. 深圳大学光电工程学院,光电子器件与系统教育部/广东省重点实验室,深圳518060 |
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| 基金项目： | 深圳市科技计划项目(JCYJ20150324141711561)，国家自然科学基金青年项目(61605124) |
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| 摘 要： | 采用热分解法制备多种核壳结构的Na_3ZrF_7:Er/Yb纳米颗粒,并对制备的上转换纳米颗粒的形貌、晶相以及发光特性进行研究。在980 nm激发光激发下,与单核的Na_3ZrF_7:Er~(3+)2%,Yb~(3+)20%纳米颗粒相比,核壳结构的Na_3ZrF_7:Er~(3+)2%,Yb~(3+)20%@Ca F2上转换纳米颗粒荧光强度提高了5倍。把Yb~(3+)/Nd~(3+)共掺的四方相Na YF4层包覆在Na_3ZrF_7:Er~(3+)2%,Yb~(3+)20%@Ca F2纳米颗粒上,我们实现了Na_3ZrF_7@Ca F2@Na YF4纳米颗粒在808 nm激发下较强的上转换红光发射,发射光的红绿比在10左右,并对其发光机制作出了解释。
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| 关 键 词： | 上转换纳米颗粒 Na3ZrF7:Yb/Er 核壳结构 荧光强度 |
Synthesis and Photoluminescence of Na3 ZrF7:Er/Yb Nanoparticles |
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| YU Ming-huai,WANG Guang-sheng,YE Shuai,SONG Jun,QU Jun-le.Synthesis and Photoluminescence of Na3 ZrF7:Er/Yb Nanoparticles[J].Journal of Synthetic Crystals,2017(9):1691-1696. |
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| Authors: | YU Ming-huai WANG Guang-sheng YE Shuai SONG Jun QU Jun-le |
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| Abstract: | In this paper, Na3ZrF7:Er/Yb nanoparticles (NPs) with core-shell structures were prepared by pyrolytic process , the morphologies , phase and emission spectra of all samples were analyzed .The emission intensity of the Na 3 ZrF7:Er3+2%, Yb3 +20%@CaF2 NPs was enhanced 5 times compared with that of Na3 ZrF7:Er3 +2%, Yb3 +20% under excitation of 980 nm.By coating the tetragonal Yb/Nd codoped NaYF4 on Na3 ZrF7:Er3 +2%, Yb3 +20%@CaF2 NPs, strongly upconverted red emissions of Na3 ZrF7@CaF2@NaYF4 NPs excited by an 808 nm laser were achieved , the red/green emission ratio approached a value of 10, the luminescence mechanism were elucidated . |
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| Keywords: | upconversion nanoparticle Na3 ZrF7:Yb/Er core-shell structure emission intensity |
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