Ln^(3+)/Cr^(3+)掺杂多晶相微晶玻璃的设计及多模自校准测温  

Design of Ln^(3+)/Cr^(3+)Doped Polyphase Glass-Ceramics and Multi-mode Self-calibration Temperature Measurement

作　　者：胡芳芳 马昱昊 张发林 郭海[1] HU Fangfang;MA Yuhao;ZHANG Falin;GUO Hai(College of Physics and Electronic Information Engineering,Zhejiang Normal University,Jinhua,Zhejiang 321004,China)

机构地区：[1]浙江师范大学物理与电子信息工程学院,浙江金华321004

出　　处：《硅酸盐学报》2024年第8期2463-2473,共11页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金项目(LY21A040005);浙江省自然科学基金项目(11804303,11974315,51802285)。

摘　　要：采用熔融淬冷法合成了Ln^(3+)/Cr^(3+)(Ln^(3+)=Er^(3+)/Tm^(3+)/Yb^(3+))掺杂的含β-YF_(3)和γ-Ga_(2)O_(3)纳米晶的多相微晶玻璃(40SiO_(2)-20Al_(2)O_(3)-15LiF-10Ga_(2)O_(3)-0.1TmF_(3)-0.1ErF_(3)-0.05Cr_(2)O_(3)-1YbF_(3)-0.5SnO)。利用Ln^(3+)在β-YF_(3)纳米晶和Cr^(3+)在γ-Ga_(2)O_(3)纳米晶中的富集,有效抑制了Ln^(3+)与Cr^(3+)之间的能量传递,从而实现多色、多模式的高效发光。分别利用Er^(3+)和Tm^(3+)的发光强度比I_(522)/I_(543)和I_(694)/I_(474)进行温度监测,得到的最大相对灵敏度分别为1.03%·K^(–1)(313 K)、1.45%·K^(–1)(473K)。此外,基于Cr^(3+)的^(2)E和^(4)T_(2)的发光强度比I_(615)/I_(720)和寿命进行温度探测,得到最大相对灵敏度分别为1.74%·K^(–1)(303 K)、0.51%·K^(–1)(496 K)。Ln^(3+)/Cr^(3+)共掺的多相微晶玻璃是一种极富竞争力的四模自校准测温材料。Introduction The energy transfer between lanthanide ions(Ln^(3+))and transition metal ions(Cr^(3+))typically leads to luminescence attenuation,which hinders their application in temperature measurement.However,this issue can be effectively addressed by synthesizing polyphase glass-ceramics that separate the Ln^(3+)and Cr^(3+)into different nano-crystals.In this study,we designed polyhedral glass-ceramics doped with Ln^(3+)/Cr^(3+)(Ln^(3+)=Er^(3+)/Tm^(3+)/Yb^(3+)).The up-conversion spectra of Tm^(3+) and Er^(3+) in the temperature range of 313–573 K,as well as the temperature-dependent properties of the emission intensity ratio of ^(2)E and ^(4)T_(2) and fluorescence lifetime decay of Cr^(3+)were systematically investigated.The results demonstrate that Ln^(3+)/Cr^(3+)-doped polyphase glass-ceramics exhibit excellent performance as a four-mode fluorescence temperature measurement material.Methods Ln^(3+)/Cr^(3+)-doped glass samples were prepared using melt quenching technology,where the raw materials were melted in a lifting furnace at 1500℃for 1 h.The sample was then poured onto a preheated copper plate to 300℃and shaped by pressing it with another copper plate.Subsequently,the sample was annealed in a Muffle furnace at 450℃for 6 h to obtain precursor glass(PG).Finally,the PG sample underwent heat treatment at 780℃for 2 h to produce glass-ceramics(GC780).X-ray diffraction apparatus was employed to measure the XRD spectra of these samples.FS-5 fluorescence spectrometer was used to measure various spectra including up-conversion and down-conversion spectra at room temperature,power-dependent upconversion spectra,temperature-dependent up-conversion and down-conversion spectra,as well as temperature-dependent fluorescence lifetime decay curves.Transmission electron microscopy techniques such as selective electron diffraction and high-power transmission electron microscopy were utilized to examine GC780 samples.Results and discussion The diffraction peaks observed in the XRD pattern of GC780 exhibit excellent

关 键 词：微晶玻璃 氟化钇 氧化镓 荧光温度探测 

分 类 号：TQ171.733[化学工程—玻璃工业]