Boosting the Temperature Detection Accuracy of Luminescent Ratiometric Thermometry via a Multifunction Fit Strategy
Boosting the Temperature Detection Accuracy of Luminescent Ratiometric Thermometry via a Multifunction Fit Strategy
复制标题
通过多功能拟合策略提高发光比例测温法的温度检测精度
DOI：
10.1021/acs.jpcc.8b06778
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发表时间：
2018
影响因子：
3.7
通讯作者：
Zhang Zhiguo
中科院分区：
文献类型：
--
作者：
Li Leipeng;Qin Feng;Zhou Yuan;Zheng Yangdong;Zhao Hua;Zhang Zhiguo
研究了拟合策略对发光比例测温精度的影响。在303 ~ 783 K范围内，研究了钨酸钙包埋Er3+的典型上转换发射谱线（2h11 /2/ 4s3 /2 - 4i15 /2）与温度的关系。结果表明，在整个温度范围内采用传统的单函数拟合方法，平均误差为3.47 K。通过对比，提出并研究了将整个电路板温度范围划分为几个较小的温度范围，并在不同的温度范围内使用多个拟合函数的策略。结果表明，随着划分温度范围数量的增加，测量温度读数逐渐接近温度的真实值。当数量设置为6时，温度误差急剧下降至0.41 K，这表明新提出的多功能拟合策略优于传统的单功能拟合方法，特别是在涉及电路板温度范围时。对造成这一现象的原因也进行了讨论。
The influence of fit strategy on the temperature detection accuracy of luminescence ratiometric thermometry is investigated here. In the range of 303–783 K, the typical2H11/2/4S3/2–4I15/2upconversion emission lines of Er3+embedded in calcium tungstate are investigated as a function of temperature. It is found that using the conventional one-function fit method over the whole temperature range leads to a mean error of 3.47 K. By contrast, the strategy, namely, dividing the whole board temperature range into several narrow ones and using several fit functions over separate temperature scopes, is proposed and studied. It is demonstrated that as the number of the divided temperature scopes is increased, the measured temperature readout gradually approaches to the true value of the temperature. When the number is set to be six, the temperature error sharply goes down to 0.41 K, suggesting that the newly proposed multi-function fit strategy is superior to the traditional one-function fit method, especially when a board temperature scope is involved. The reason responsible for this phenomenon is also discussed.