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A facile approach to the synthesis of Er3+–Yb3+–Mo6+ co-doped TiO2/Yb2Ti2O7 electrospun nanofibers and high thermal sensitivity
Journal of Sol-Gel Science and Technology ( IF 2.3 ) Pub Date : 2021-08-12 , DOI: 10.1007/s10971-021-05598-8
Kuichao Liu 1, 2 , Ke Ma 1 , Hualong Tao 1 , Yan Cui 1 , Xingjian Tian 1 , Shimin Liu 1 , Zhihua Zhang 1 , Ming He 2 , Bin Dong 2 , Bo Song 3
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Er3+–Yb3+–Mo6+ co-doped TiO2/Yb2Ti2O7 up-conversion luminescent nanofibers have been successfully synthesized using the electrospinning technology followed by thermolysis. The effects of the precursor ratio and annealing process on up-conversion luminescent character were investigated. The phase of TiO2 was determined to be either anatase or rutile. And the cubic Yb2Ti2O7 in Er3+–Yb3+–Mo6+ co-doped TiO2 phosphor was confirmed. After annealing at high temperature, the up-conversion luminescent intensity of the studied system increased obviously. The fluorescence intensity ratio (FIR) used to be made on the basis of green up-conversion emissions. It was studied as a function of temperature. The maximum rate of sensitivity was ~0.01 K−1 in the range of 300–600 K. The results indicate that Er3+–Yb3+–Mo6+ co-doped TiO2/Yb2Ti2O7 phosphor is a brand-new material that meets the requirement of the optical temperature sensing.



中文翻译:

一种合成 Er3+–Yb3+–Mo6+ 共掺杂 TiO2/Yb2T​​i2O7 电纺纳米纤维和高热敏性的简便方法

3+ -Yb 3+ -Mo 6+共掺杂的TiO 2的Yb / 2的Ti 2 ö 7上转换发光纳米纤维利用静电纺丝技术成功地合成,随后通过热。研究了前驱体比例和退火工艺对上转换发光特性的影响。TiO 2的相被确定为锐钛矿或金红石。和立方晶的Yb 2的Ti 2 ö 7在铒3+ -Yb 3+ -Mo 6+共掺杂的TiO 2磷被证实。高温退火后,所研究体系的上转换发光强度明显增加。荧光强度比 (FIR) 过去是基于绿色上转换发射得出的。它被研究为温度的函数。灵敏度的最大值率为〜0.01ķ -1在300-600 K的范围的结果表明,二3+ -Yb 3+ -Mo 6+共掺杂的TiO 2 /镱2的Ti 2 ö 7磷光体是满足光学温度传感要求的全新材料。

更新日期:2021-08-19
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