Improving sensing sensitivity of Er/Yb co-doped NaYF4 nanorods via selecting non-thermally-coupled levels
Improving sensing sensitivity of Er/Yb co-doped NaYF4 nanorods via selecting non-thermally-coupled levels
复制标题
通过选择非热耦合水平提高 Er/Yb 共掺杂 NaYF4 纳米棒的传感灵敏度
DOI：
10.1007/s10854-017-7803-8
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Zhang Xueru
中科院分区：
文献类型：
--
作者：
Hao Haoyue;Lu Hongyu;Ao Guanghong;Song Yinglin;Wang Yuxiao;Zhang Xueru
在980 nm激光激发下，研究了Yb 3 +-Er 3+掺杂的NaYF 4：Er 3 +/Yb 3+纳米棒的温度依赖上转换发光，该纳米棒可发射绿色、红色和蓝色光。结果表明，I520/I550、I654/I550、I520/I407和I654/I407的自然对数与温度的倒数具有良好的线性关系，表明它们在温度测量中具有潜在的应用价值。在471 K时，上述测温方法的最大传感灵敏度分别达到0.007、0.032、0.6、2.7 K−1。在296 ~ 471 K温度范围内，发光颜色由绿色向黄色转变。计算出的CIE坐标随温度呈线性变化，也可用于测温。这些优异的性能使NaYF 4：Er 3 +/Yb 3+纳米棒成为温度传感器的优秀候选者。
The temperature-dependent up-conversion luminescence of the Yb3+-Er3+ doped NaYF4:Er3+/Yb3+ nanorods, which can emit green, red and blue emissions, was investigated under 980 nm laser excitation. Our results showed that the natural log of I520/I550, I654/I550, I520/I407 and I654/I407 had well linear relationship with the reciprocal of temperature, suggesting their potential application in temperature measurement. At 471 K, the maximal sensing sensitivities of the above thermometry methods reached 0.007, 0.032, 0.6, 2.7 K−1, respectively. Moreover, the luminescence color shifted from green to yellow with the temperature increasing from 296 to 471 K. The calculated CIE coordinates varied linearly with the temperature, which also can be used in thermometry. These excellent properties make NaYF4:Er3+/Yb3+ nanorods an excellent candidate as a temperature sensor.