摘要
通过水热法配合高温煅烧合成了斜方晶系Y_(7)O_(6)F_(9):Er,Yb晶体,该晶体可实现高效上转换发光且具有良好的高分子亲和性。利用高压静电纺丝技术将Y_(7)O_(6)F_(9):Er,Yb晶体颗粒与高分子化合物聚丙烯腈(PAN)复合,制备出了兼备温度传感特性、柔韧性和灵活性的Y_(7)O_(6)F_(9):Er,Yb/PAN纤维。977 nm激光激发下,晶体颗粒和复合纤维在303~433 K温度范围内均展示出高效的上转换发光和良好的温度传感特性,且复合纤维在测温范围内表现出优于晶体颗粒的温度灵敏度和分辨率。在303 K温度下有最大绝对灵敏度值1.143%·K^(-1),在433 K温度下有最小的分辨率0.15 K。因此,具有柔韧性的复合纤维既有良好温度传感特性又可任意调节形态,适应复杂多样的应用环境,是可应用于实现智能穿戴领域温度传感性能的有效候选材料。
Y_(7)O_(6)F_(9):Er,Yb orthorhombic crystals were synthesized by hydrothermal method and high-temperature calcination,which achieves efficient up-conversion luminescence and has satisfactory polymer affinity.Y_(7)O_(6)F_(9):Er,Yb/PAN composite fibers with high temperature sensing properties,and commendable flexibility were prepared by high voltage electrospinning technology.Under the excitation of 977 nm laser,the composite fibers show efficient up-conversion luminescence and better temperature sensing performance than crystals in the temperature range of 303 K to 433 K.Within the temperature range of measurement,the maximum value of SAand SRof Y_(7)O_(6)F_(9):Er,Yb crystals is 0.720%·K^(-1)and 1.142%·K^(-1),and the minimum temperature resolution was 0.37 K.The maximum value of SAand SRof Y_(7)O_(6)F_(9):Er,Yb/PAN composite fibers is 0.811%·K^(-1)and 1.143%·K^(-1),and the minimum temperature resolution was 0.15 K.The sensitivities and temperature resolution of composite fibers with flexibility are higher than those of crystals.Therefore,the flexible Y_(7)O_(6)F_(9):Er,Yb/PAN composite fibers not only have admirable temperature sensing characteristics but also can adapt to complex and diverse application environments,which is a viable candidate material for realizing temperature sensing performance in the field of intelligent wearable.
作者
赵昕
刘哲
林海
李德胜
ZHAO Xin;LIU Zhe;LIN Hai;LI Desheng(School of Information Science and Engineering,Dalian Polytechnic University,Dalian 116034,China)
出处
《发光学报》
EI
CAS
CSCD
北大核心
2023年第2期279-288,共10页
Chinese Journal of Luminescence
基金
辽宁省教育厅基本科研项目(LJKMZ20220904)
辽宁省自然科学基金(2022-MS-346)。
