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
玻尔兹曼分布 组织温度探测 发射强度比 测温灵敏度 Boltzmann distribution tissue temperature detection La2O2S∶Yb3+ La2O2S∶Yb3+ Er3+ Er3+ fluorescence intensity ratio sensor sensitivity
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.
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.