X射线激发深层肌体温度传感材料La2O2S∶Yb3+,Er3+的测温性质研究

汪欣; 李晓晓; 李天义; 杨艳民

doi:doi:10.3788/fgxb20194001.0030

发光学报, 2019, 40 (1): 30, 网络出版: 2019-01-19

X射线激发深层肌体温度传感材料La₂O₂S∶Yb³⁺,Er³⁺的测温性质研究

Thermometric Properties of Deep Tissue Temperature Sensing Material La₂O₂S∶Yb³⁺,Er³⁺ Excited by X-ray

论文大纲

汪欣李晓晓李天义杨艳民

作者单位

河北大学物理科学与技术学院河北省光电信息材料重点实验室新能源光电器件国家地方联合工程实验室, 河北保定 071002

摘要

Yb3+、Er3+共掺杂上转换发光材料能被红外光激发, 可用于肌体内部温度测量, 但上转换材料效率较低, 无法实现较深组织温度探测。考虑到Er3+能级可被多种光源布居, 较好肌体穿透性的X射线无疑是理想的激发源。本文首次报道了一种新型的深层肌体温度传感材料La2O2S∶Yb3+,Er3+。数据表明, X射线激发下, 在不同温度下的两个绿光发射强度比符合玻尔兹曼分布, 最高测温灵敏度达到了0.011 5 K-1。我们相信Yb3+、Er3+共掺的La2O2S是可以应用于临床的理想测温材料。

Abstract

Yb3+, Er3+ co-doped up-conversion luminescent materials can be used to measure the internal temperature of tissue under infrared light excitation, but the lower efficiency of up-conversion materials makes it impossible to detect deep tissue temperature. Considering that Er3+ energy levels can be populated by various light sources, X-ray is undoubtedly an ideal excitation source with better penetration. In this article, we first reported a novel deep tissue temperature sensing material La2O2S∶Yb3+,Er3+. The data show that the fluorescence intensity ratio of the two green levels at different temperatures conforms to Boltzmann distribution under X-ray excitation, and the maximum sensor sensitivity is 0.011 5 K-1. We believe that Yb3+, Er3+ co-doped La2O2S can be used as an ideal temperature measuring material for clinical application.

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汪欣, 李晓晓, 李天义, 杨艳民. X射线激发深层肌体温度传感材料La₂O₂S∶Yb³⁺,Er³⁺的测温性质研究[J]. 发光学报, 2019, 40(1): 30. WANG Xin, LI Xiao-xiao, LI Tian-yi, YANG Yan-min. Thermometric Properties of Deep Tissue Temperature Sensing Material La₂O₂S∶Yb³⁺,Er³⁺ Excited by X-ray[J]. Chinese Journal of Luminescence, 2019, 40(1): 30.

X射线激发深层肌体温度传感材料La₂O₂S∶Yb³⁺,Er³⁺的测温性质研究

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