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1.北京大学 化学与分子工程学院, 稀土材料化学及应用国家重点实验室, 北京大学⁃香港大学稀土材料与生物无机化学联合实验室, 北京分子科学中心, 北京 100871
2.兰州大学 化学化工学院, 甘肃 兰州 730000
[ "张格(1991-),女,河南焦作人,博士,2019年于北京大学获得博士学位,主要从事稀土纳米材料的发光敏化途径的研究。E-mail: gezhang@pku. edu. cn" ]
[ "孙聆东(1969-),女,黑龙江齐齐哈尔人,博士,教授,1996年于中国科学院长春物理研究所获得博士学位,主要从事稀土材料化学、等离激元纳米结构及其在生物检测与成像中的应用研究。 E-mail: sun@pku. edu. cn" ]
[ "严纯华(1961-),男,江苏如皋人,博士,教授,1988年于北京大学获得博士学位,2011年遴选为中国科学院院士,2012年遴选为发展中国家科学院院士,主要从事稀土功能材料化学、稀土分离及产业化研究。 E-mail: yan@lzu.edu.cn" ]
纸质出版日期:2023-07-05,
收稿日期:2023-05-15,
修回日期:2023-05-29,
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张格,杨向飞,王晓勇等.稀土纳米晶的上转换发光调控研究进展[J].发光学报,2023,44(07):1149-1166.
ZHANG Ge,YANG Xiangfei,WANG Xiaoyong,et al.Research Progress on Upconversion Emission Modulation of Rare Earth Nanocrystals[J].Chinese Journal of Luminescence,2023,44(07):1149-1166.
张格,杨向飞,王晓勇等.稀土纳米晶的上转换发光调控研究进展[J].发光学报,2023,44(07):1149-1166. DOI: 10.37188/CJL.20230131.
ZHANG Ge,YANG Xiangfei,WANG Xiaoyong,et al.Research Progress on Upconversion Emission Modulation of Rare Earth Nanocrystals[J].Chinese Journal of Luminescence,2023,44(07):1149-1166. DOI: 10.37188/CJL.20230131.
近年来,将近红外光转换为短波长的可见或近红外光的稀土纳米晶上转换发光研究吸引了生物成像、纳米温度传感、太阳能电池等领域研究者的广泛关注。面向多领域的应用需求,稀土纳米晶上转换发光需提高其发光强度、发光波长以及激发波长的选择性。本文综述了纳米尺度上,通过组成、结构以及核壳结构的设计,在理解上转换发光过程的能量传递路径和上转换发光过程的基础上,提高对上转换发光的颜色、各跃迁的比例以及发光强度、发光寿命等调控的研究进展。此外,还关注了纳米晶与贵金属表面电场、表面有机分子以及环境温度的耦合在提高辐射跃迁几率、减少无辐射能量损失等方面提高其上转换发光强度的研究发展趋势。
In recent years, upconversion emission of rare earth nanocrystals, which can convert near-infrared light to short-wavelength visible or near-infrared one, has attracted extensive attention from researchers in the fields of biological imaging, nanothermometer, solar cells, and so on. For multi-field applications, upconversion emission of rare earth nanocrystals needs to improve the luminescent intensity, luminescent wavelength selectivity, and excitation wavelength. In this paper, we briefly review the research progress in improving the color, luminescence intensity, and luminescence lifetime of upconversion emission on the basis of understanding the energy transfer pathway and upconversion emission process through the design of composition, structure and core-shell structure at the nanoscale. In addition, the coupling between nanocrystals and precious metal surface electromagnetic fields, surface organic molecules and ambient temperature is also concerned. The research trend of increasing the intensity of rare earth upconversion luminescence in terms of increasing radiation transition probability and reducing non-radiation quenching is also mentioned.
稀土纳米晶上转换发光核壳结构
rare earth nanocrystalsupconversion emissioncore/shell structure
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