聊城大学学报（自然科学版）2024，Vol.37Issue(2)：42-49,8.DOI:10.19728/j.issn1672-6634.2023050009
Yb3+/Ho3+共掺杂Sc2W3O12荧光粉的上转换发光和温度传感特性
Upconversion Luminescence and Temperature Sensing Properties of Yb3+/Ho3+Co-Doped Sc2W3O12 Phosphors
摘要
Abstract
Sc2W3O12:Yb3+/Ho3+phosphor was prepared by hydrothermal method combined with calcina-tion.The samples were characterized by X-ray diffractometer,scanning electron microscope and fluores-cence spectrometer.Under 980 nm laser excitation,Sc2W3O12∶Yb3+/Ho3+showed three characteristic peaks at 542,657 and 752 nm,corresponding to the 5F4/5S2-5I8,5F5-5I8 and 5F4/5S2-5I7 energy level transitions of Ho3+,respectively,emitting green,red and weak red light.The upconversion luminescence mechanism of the phosphor was discussed,and it was concluded that the green and red upconversion emis-sions are two-photon processes.Based on the fluorescence intensity ratio technique,the relationship be-tween the upconversion luminescence intensity and temperature of the non-thermally coupled energy levels of 5F4/5S2 and 5F5 was studied in the temperature range of 323～523 K.The maximum absolute sensitivity of the phosphor reached 1％K-1at 523 K.The results show that Sc2W3O12∶Yb3+/Ho3+phosphor can be used as a candidate material for temperature sensors.关键词
上转换发光/能量传递/荧光强度比/温度传感器Key words
upconversion luminescence/energy transfer/fluorescence intensity ratio/temperature sensor分类
化学化工引用本文复制引用
杜慧敏,杨骏,胡珊珊..Yb3+/Ho3+共掺杂Sc2W3O12荧光粉的上转换发光和温度传感特性[J].聊城大学学报（自然科学版）,2024,37(2):42-49,8.基金项目
国家自然科学基金项目(52172154)资助 （52172154）
