采用水热法添加不同的表面活性剂合成了NaYF4∶Yb,Er（Tm）,并借助XRD、TEM、FT-IR、上转换发光谱对合成样品的物相、形貌、表面包覆情况、上转换发光强度等进行了分析。结果表明在相同的温度、时间条件下合成样品的物相均为六方相;添加不同表面活性剂所合成样品的形貌各不相同,可以通过控制添加表面活性剂的种类、剂量等条件调控晶体的生长。添加柠檬酸所合成的样品的上转换发光强度较高。
Hydrothermal method was used to prepare NaYF4∶Yb,Er(Tm) by adding different surfactants and the samples were characterized by means of XRD,TEM,FT-IR and up-conversion luminescence spectrum to analysis its physical phase,morphology,surface and the intensity of up-conversion luminescence.the results showed that the samples were all hexagonal phase under the equivalent reactive temperature and time condition;The morphology of the samples were different from each other by adding different surfactants,we could tailor the growth of crystal by controlling the type and dose of added surfactants.The sample with citric acid as surfactant exhibited the highest intensity of up-conversion luminescence.
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