烧结温度对NaYF4:Yb,Er晶体结构和发光的影响研究
Research on the Influence of Sintering Temperature on the Crystal Structure and Luminescence of NaYF4:Yb,Er
摘要: 为了探究烧结温度对NaYF4:Yb,Er晶体结构和发光的影响，采用水热法一步合成了六方相NaYF4:Yb,Er，通过烧结稳定过程去除杂质。利用X射线粉末衍射(XRD)、荧光光谱等手段对不同烧结温度下的产物进行物相及光学性能分析。结果表明，烧结温度在500℃时NaYF4:Yb,Er开始向立方相转变，当烧结温度达到700℃时NaYF4:Yb,Er完全变成立方相。并且其荧光性能也随温度的升高而发生变化，随着温度升高绿光(2H11/2→4I15/2和4S3/2→4I15/2跃迁)的荧光强度越低，红光(4F9/2→4I15/2跃迁)的荧光强度越高。
Abstract: In order to investigate the influence of sintering temperature on the crystal structure and luminescence of NaYF4:Yb,Er, hexagonal NaYF4:Yb,Er was synthesized by a one-step hydrothermal method, and the impurities were removed by sintering and stabilizing. The phase and optical properties of the products under different sing temperatures were analyzed by X-ray powder diffraction (XRD), fluorescence spectrum and other means. The results show that NaYF4:Yb,Er to transform into cubic phase at 500˚C, and NaYF4:Yb,Er completely transforms into cubic phase when the sintering temperature reaches 700˚C. Moreover, its fluorescence performance also changes with the increase of temperature. With the increase of temperature, the fluorescence intensity of green light (2H11/2→4I15/2和4S3/2→4I15/2 transition) is lower and lower, and the intensity of red light (4F9/2→4I15/2 transition) is higher and higher.
文章引用：程杨华, 聂宗昊, 魏凌锋, 白一丹. 烧结温度对NaYF4:Yb,Er晶体结构和发光的影响研究[J]. 应用物理, 2025, 15(4): 290-296. https://doi.org/10.12677/app.2025.154033

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