发光学报2024，Vol.45Issue(7)：1104-1113,10.DOI:10.37188/CJL.20240104
Lu3+掺杂Na5Y9F32:Ho3+/Yb3+/Ce3+单晶体的增强红色上转换发光与光学温度传感性能
Enhanced Red Up-conversion Emission of Lu3+Doped Na5 Y9 F32∶Ho3+/Yb3+/Ce3+Single Crystal and Optical Temperature Sensing Performance
摘要
Abstract
Lu3+(mole fraction 0,0.6%,1.2%,1.8%)doped Na5Y9F32∶Ho3+/Yb3+/Ce3+single crystals were grown using a sealed Bridgman method.When excited by 980 nm LD,up-conversion emissions at 543 nm(5S2/5F4→5I8),656 nm(5F5→5I8)in red,and 750 nm(5S2/5F4→5I7)in near-infrared were observed.The two-photon transition pro-cesses leading to these emissions were identified by analyzing changes in luminescence intensities with varying excita-tion light intensities.Furthermore,the impact of Lu3+ion doping concentration on both up-conversion luminescence intensity and fluorescence lifetime was investigated.The 656 nm red emission in the crystal was gradually enhanced as the Lu3+doping concentration increased from 0 to 1.8%.Conversely,the green emission at 543 nm and near-infra-red at 750 nm decreased.The ratio between red and green intensity increased from 0.01 to 1.55,while the fluores-cence lifetime of 543 nm decreased from 1.29 ms to 0.99 ms.The incorporation of Lu3+ions replaces the lattice sites of Y3+ions,altering the local field environment of the crystal,resulting in changes in the up-conversion lumines-cence.The maximum absolute sensitivity and relative sensitivity of 1.8%Lu3+doped Na5Y9F32∶Ho3+/Yb3+/Ce3+single crystal in the range of 298-448 K were 0.242%·K-1 and 0.217%·K-1,respectively.关键词
Na5Y9F32单晶/增强上转换红光/Ho3+/Yb3+/Ce3+/光学温度传感/能量转移Key words
Na5Y9F32 single crystal/enhanced red up-conversion emission/Ho3+/Yb3+/Ce3+/optical temperature sensing/energy transfer分类
物理学引用本文复制引用
徐义松,方立志,夏海平,周雄,宋宏伟..Lu3+掺杂Na5Y9F32:Ho3+/Yb3+/Ce3+单晶体的增强红色上转换发光与光学温度传感性能[J].发光学报,2024,45(7):1104-1113,10.基金项目
国家自然科学基金(62275133) （62275133）
浙江省自然科学基金(LY22E020002) National Natural Science Foundation of China(62275133) （LY22E020002）
Natural Science Foundation of Zhejiang Province(LY22E020002) （LY22E020002）
