A method of improving the sensitivity of infrared to visible light conversion of temperature sensor based on Er3 doped PLZT transparent ceramics
A method of improving the sensitivity of infrared to visible light conversion of temperature sensor based on Er3 doped PLZT transparent ceramics
复制标题
一种提高基于Er3掺杂PLZT透明陶瓷的温度传感器红外到可见光转换灵敏度的方法
DOI：
10.1016/j.jlumin.2019.04.064
复制
发表时间：
2019
影响因子：
3.6
通讯作者：
Xu Long
中科院分区：
文献类型：
--
作者：
Zeng Xin;Xu Caixia;Xu Long
研究了一种基于Er3+掺杂锆钛酸铅镧陶瓷的荧光强度比、吸收截面和光反射率的高灵敏度温度传感器。研究了当样品被不同入射光功率的980 nm二极管激光器激发时，不同能级（H-2（11/2）和S-4（3/2））的两个绿色上转换发射峰与基态能级的荧光强度比（FIR），以了解313 K至573 K的温度性能，其中温度传感器的灵敏度也被描述为温度的函数。在同一温度范围内测量了透射光谱和吸收系数，与温度呈现良好的线性关系，可作为温度传感器。借助氦氖激光器和功率计，测量了样品对632.8 nm光的反射率和透射率，在3% Er3+ : PLZT中与温度呈线性关系，也可用于温度传感应用。这项工作为利用不同方式（如FIR、吸收系数、反射率、透射率）确定温度提供了工具，它可以大大提高温度传感器的灵敏度和可信度。
A high sensitivity temperature sensor based on the fluorescence intensity ratios, absorption cross section and the reflectivity of light has been investigated in Er3+ doped lead lanthanum zirconate titanate ceramics. The fluorescence intensity ratios (FIR) of two green upconversion emission peaks from different levels (H-2(11/2) and S-4(3/2)) to the ground state level were investigated for temperature performance from 313 K to 573 K when the sample was excited by a 980 nm diode laser with different incident light power, in which the sensitivity of the temperature sensor was also described as a function of temperature. Transmission spectra and absorption coefficient were measured in the same temperature range, which presented a good linear relationship with temperature and could be used as a temperature sensor. With the help of the helium-neon laser and power meter, the reflectivity and transmittance of the sample for a 632.8 nm light were measured, which showed a linear relationship with temperature in 3% Er3+ : PLZT, and could also be used in temperature sensing applications. This work provided a tool to determine the temperature using different ways (such as FIR, absorption coefficient, reflectivity, transmittance), it can greatly improve the sensitivity and credibility of temperature sensors.