F掺杂对Yb-Er-F掺杂TiO2纳米粒子上转换发光性能的影响
首发时间:2018-11-02
摘要:上转换发光纳米粒子具有将近红外光转换为可见光的能力而被广泛利用。目前基于氟化物基质材料的上转换发光材料具有优秀的上转换发光能力,但由于氟化物不导电,限制了其利用范围。氧化物TiO2基质的上转换发光材料具有良好稳定性和半导体特性,但由于其声子能级较高,上转换发光效率低。本文通过水热法制备了Yb-Er-F掺杂的TiO2上转换纳米粒子(YEF-TiO2),其具有优良的上转换发光性能和TiO2半导体特性,并进一步探究了F掺杂量对YEF-TiO2上转换发光性能的影响,实验结果显示,在F:Ti=0.4时,YEF-TiO2具有最佳的上转换发光性能。
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Effect of F doping on upconversion luminescence properties of Yb-Er-F doped TiO2 nanoparticles
Abstract:Upconversion luminescent nanoparticles are widely utilized for their ability to convert near-infrared light into visible light. At present, the upconversion luminescent material based on the fluoride matrix material has excellent up-conversion luminescence ability, but the fluoride is not conductive, which limits its utilization range. The oxide TiO2 matrix has good stability and semiconductor characteristics, but its upconversion luminescence efficiency is low due to its high phonon level. Yb-Er-F doped TiO2 upconversion nanoparticles (YEF-TiO2) were prepared by hydrothermal method. They have excellent upconversion luminescence properties and TiO2 semiconductor properties, and the F doping amount to YEF-TiO2 was investigated. The effect of up-conversion luminescence performance shows that YEF-TiO2 has the best up-conversion luminescence performance when F:Ti=0.4.
Keywords: Material science Upconversion F doping Nanoparticles
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F掺杂对Yb-Er-F掺杂TiO2纳米粒子上转换发光性能的影响
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