钬离子掺杂氟氧钇亚微米晶的荧光量子化表征与温度传感特性研究  

Fluorescence Quantization Characterization and Temperature Sensing Properties of Holmium Ion-doped Yttrium Fluoride Oxide Submicron Crystals

作　　者：赵昕[1] 于婧 李德胜[1] 林海[1] ZHAO Xin;YU Jing;LI Desheng;LIN Hai(School of Information Science and Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学信息科学与工程学院,大连116034

出　　处：《光子学报》2024年第4期187-197,共11页Acta Photonica Sinica

基　　金：辽宁省教育厅基本科研项目(No.LJKMZ20220904)。

摘　　要：采用水热合成法和高温煅烧法相结合制备了Ho^(3+)/Yb^(3+)共掺杂三方晶系的YOF亚微米晶体,该晶体具有较强的量子产率和良好的灵敏度。在977 nm激光泵浦下对晶体颗粒的上转换发光性能进行表征,利用荧光光谱测试系统绘制出样品的光谱功率分布。计算了光量子数分布和量子产率等绝对荧光参量。展示了在303~433 K温度范围内的荧光上转换发光性能并计算了灵敏度。测试结果表明,在977 nm激光激发下泵浦功率密度为73 m W/mm~2时,总光通量达到3.35 mlm,Ho^(3+)的绿光和红光的量子产率分别为2.97×10^(-5)和1.40×10^(-5),较高的量子产率确保了足够的荧光强度来实现温度反馈。在303 K时有最大相对灵敏度为0.437%K^(-1),当温度升至433 K时相对灵敏度仍能保持在0.331%K^(-1)。因此Ho^(3+)/Yb^(3+)共掺杂YOF亚微米晶体作为一种高效发光和高温度灵敏度材料为温度传感领域提供了一种潜在的选择。YOF-HY submicron crystals prepared by hydrothermal synthesis and high temperature calcination have been demonstrated to possess Pure Upconversion(UC)luminescence and sensitive temperature feedback properties for laser display and real-time temperature monitoring in complex environments.In recent years,the fine optoelectronics industry,especially in the field of photonic devices and non-contact temperature sensing,has witnessed a growing requirement for optical temperature measurement materials in terms of clear presentations and accurate test records.Among many temperature sensing materials,rare earth doped upconversion luminescent fluorophor which can realize temperature sensing by using their own non-thermal coupled energy levels are ideal optical temperature measuring materials.Compared to traditional contact temperature measurement techniques,the non-contact temperature measurement based on Fluorescence Intensity Ratio(FIR)is a promising temperature sensing technique with favorable sensitivity,high accuracy,low environmental dependence,which avoids the spectral loss and excitation source fluctuation.UC fluorescent materials have attracted widespread interest owing to their excellent optical properties such as pure luminous,rapid response and real-time feedback demonstrated in various optoelectronic devices.Rare-earth ions are inherently low in luminescence efficiency,but the introduction of sensitizers will produce strong characteristic fluorescence by increasing the absorption of infrared photons and transferring energy to the rare-earth ions.Among the rare earth ions,Ho^(3+)has attracted great focus according to its special energy level structure which has been used to achieve strong visible UC luminescence with great temperature sensing potential,meanwhile the introduction of Yb^(3+)ions as a sensitizer can enhance the intensity of UC emission in Ho^(3+)ions-doped materials at the pumping of~980 nm lasers.Among UC luminescence materials,fluorine oxides,with their lower phonon energies and stronger inversio

关 键 词：稀土掺杂 YOF亚微米晶体 上转换光子定量 量子产率 实时温度反馈 

分 类 号：O482.31[理学—固体物理]