Yb3+/Ho3+掺杂纳米氟磷灰石的制备及发光性质研究

摘要

利用水热法成功制备了Yb3+/Ho3+掺杂氟磷灰石(FA:Yb3+/Ho3+)纳米材料,通过改变稀土离子Yb3+的掺杂比例有效提高了纳米材料的上转换发光强度.利用透射电子显微镜(TEM)、X射线衍射仪(XRD)、傅里叶红外光谱仪(FTIR)、荧光光谱仪等表征手段对Yb3+/Ho3+掺杂纳米氟磷灰石的形貌、结晶程度和物相组成、发光性质进行了研究.结果表明,Yb3+/Ho3+掺杂氟磷灰石纳米材料呈棒状并具有六方相结构.通过对稀土离子Yb3+的掺杂比例进行调节,使得材料的上转换发光效率有了明显的增强,Yb3+的掺杂含量为60%时发光最强.因此,这类具有较好上转换发光性能的FA:Yb3+/Ho3+纳米材料可为细胞标记和成像提供良好的条件,有望促进其在生物医药领域中的广泛应用.%Yb3+/Ho3+doped nano-fluorapatite(FA:Yb3+/Ho3+)were prepared successfully by hydrothermal method. The up-conversion luminescence intensity of FA:Yb3+/Ho3+nanomaterials were effectively improved by changing the doped pro-portion of the rare earth Yb3+ions. Transmission electron microscopy (TEM),X-ray diffraction (XRD),Fourier Trans-form Infrared Spectrometer (FTIR),fluorescence spectroscopy were used to characterization the morphology,degree of crystallinity and phase composition,luminescence properties of Yb3+/Ho3+ doped nano-fluorapatite. The results showed that Yb3+/Ho3+ doped nano-hydroxyapatite material rod-shaped and has a hexagonal crystal structure. By adjusting the doped proportion of the rare earth Yb3+ions,upconversion luminescence efficiency of the material has greatly improved. The strongest emitting of FA:Yb3+/Ho3+ nanomaterials is when the doped proportion of the rare earth Yb3+ions reach to 60%. Thus,this kind of FA:Yb3+/Ho3+ nanomaterials has good upconversion luminescence properties can provide fa-vorable conditions in cell markers and imaging. It is expected to promote their wider application in the biomedical field.