摘要
采用一步水热法合成了[CaY]F2晶体以及系列不同掺杂比例的[CaY]F2:Yb^3+,Er^3+荧光粉产品,通过XRD和EDS测试对产品进行物相纯度分析、元素组成分析以及元素分布分析.接着探究了[CaY]F2:Yb^3+,Er^3+荧光粉的上转换发光性能并得出Yb^3+,Er^3+离子的优化浓度分别为12%,3%,其在绿光区域和红光区域均有发射带,分别归因于Er^3+的2H11/2/4S3/2→4I15/2和4F9/2→4I15/2跃迁.最重要的是,该工作中基于Er^3+的热耦合能级探讨了[CaY]F2:12%Yb^3+,3%Er^3+荧光粉的温度传感能力,结果显示当温度为523K时SA有最大值0.00413K-1,表明该材料可能在控温、传感等领域具有潜在用途。
[CaY]F2 crystals and a series of[CaY]F2:Yb^3+,Er^3+phosphors with different doping ratios were synthesized by a one-step hydrothermal method.XRD and EDS tests were used to analyze the phase purity,element composition and element distribution of the products.Then the up-conversion luminescence performance of[CaY]F2:Yb^3+,Er^3+phosphors were explored and the optimal doping concentration of Yb^3+and Er^3+ions were obtained by the control variable method,which were 12%and 3%,respectively.There are emission bands in green and red regions,which are respectively attributed to the 2H11/2/4S3/2→4I15/2 and 4F9/2→4I15/2 transitions of Er^3+ions.Finally,the temperature sensing ability of[CaY]F2:12%Yb^3+,3%Er^3+phosphor was discussed based on the thermal coupling energy level of Er^3+,and the results show that SA has a maximum value of 0.00413-1 when the temperature is 523 K.This experimental result indicates that the material may have potential applications in the fields of temperature control and sensing.
作者
刘玉莲
毛旖旎
杨骏
LIU Yu-lian;MAO Yi-ni;YANG Jun(School of Chemistry and Chemical Engineering,Southwest University,Chongqing 400715,China)
出处
《聊城大学学报（自然科学版）》
2020年第4期39-44,共6页
Journal of Liaocheng University:Natural Science Edition
基金
国家自然科学基金项目(51302229)
重庆市教委雏鹰计划(CY180225)资助。
