Optical investigation of Er3+ and Er3+/Yb3+ doped zinc-tellurite glass for solid-state lighting and optical thermometry
Optical investigation of Er3+ and Er3+/Yb3+ doped zinc-tellurite glass for solid-state lighting and optical thermometry
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DOI：
10.1016/j.sna.2018.11.043
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
S. Tabanli;G. Eryurek
中科院分区：
文献类型：
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作者：
S. Tabanli;G. Eryurek
采用熔体淬冷法制备了Er 3+和Er 3 +/Yb 3+掺杂的锌碲酸盐（ZnO/TeO 2）玻璃。通过吸收光谱、发光光谱和色度坐标（CIE-1931）测量研究了玻璃的光谱性质。上转换发光强度和CIE-1931坐标的强烈影响的Yb 3+离子的存在下，以及975 nm激光的激发功率密度。测量了温度对Er ~（3+）离子2 H ~（11/2）和4S ~（3/2）两个热耦合能级的绿色上转换发光的影响，并利用荧光强度比技术研究了温度敏感特性。高灵敏度和短响应时间特性使ZnO/TeO 2玻璃成为非接触式光学温度传感器应用的一个非常好的候选者。在429 K时，掺Er 3+和Er 3 +/Yb 3+的玻璃的最大灵敏度分别为72 × 10−4K-1和120 × 10−4K− 1，远高于以前报道的基于Er 3+离子掺杂材料的温度传感器。因此，Er 3 +/Yb 3+掺杂的锌碲酸盐玻璃可以比仅掺杂Er 3+离子的锌碲酸盐玻璃更适合于颜色可调谐的固态照明和非接触式光学测温应用。
Er3+and Er3+/Yb3+doped zinc tellurite (ZnO/TeO2) glasses were prepared using melt quenching technique. Spectroscopic properties of the glasses were studied by absorption spectroscopy, luminescence spectroscopy, and color chromaticity coordinates (CIE-1931) measurements. Upconverted-emission intensities and the CIE-1931 coordinates were strongly affected by the presence of Yb3+ion, as well as the excitation power density of 975 nm laser light. Effect of temperature on green upconverted-emissions from two thermally coupled2H11/2and4S3/2levels of Er3+ions were measured and fluorescence intensity ratio technique was applied to investigate the temperature sensing properties. High sensitivity and short response time properties make ZnO/TeO2glasses a very good candidate for non-contact optical temperature sensor applications. The maximum sensitivity of the glasses doped with Er3+and Er3+/Yb3+were found to be 72 × 10−4K-1and 120 × 10−4K−1at 429 K, respectively which are much higher than previously reported temperature sensors based on Er3+ion doped materials. Hence, Er3+/Yb3+doped zinc-tellurite glass can be more suitable than that of doped with Er3+ions only for color tunable solid-state lighting and non-contact optical thermometry applications.