【摘要】 本文通过一锅法制备出聚乙二醇（PEG）稳定的Mn²⁺掺杂的BaGdF₅:Yb/Er纳米粒子（NPs）。傅里叶变换红外光谱证明PEG被成功修饰在Mn²⁺掺杂的BaGdF₅:Yb/Er纳米粒子表面。透射电镜（TEM）结果说明:逐渐增加Mn²⁺掺杂的含量,纳米粒子的尺寸大约从20 nm转变到10 nm;X射线衍射（XRD）证明Mn²⁺掺杂的含量X%（X=0,10,20,30,40,50）变化,纳米粒子的晶体结构并无明显变化;荧光光谱证明;Mn²⁺掺杂可以提高纳米粒子的上转换荧光强度。更多还原

【Abstract】 Polyethylene glycol（PEG） stabilized and Mn²⁺ doped BaGdF₅:Yb/Er upconversion nanoparticles are successfully prepared by a facile one-pot method. FT-IR spectra demonstrated PEG was successful modified on the surface of NPs. The crystal phase of X%（X=0, 10, 20, 30, 40, 50） Mn²⁺ doped BaGdF₅:Yb/Er NPs were no changed by powder X-ray diffraction（XRD） confirmed. Transmission electron microscopy（TEM） images revealed that the size of NPs altered from about 20 to 10 nm by gradually doped Mn²⁺, Moreover, the intensity of upconversion luminescence were found to have enhanced by Mn²⁺ doped under excitation of 980 nm laser.更多还原