Highly Sensitive Optical Thermometry of Yb3+‐Er3+ Codoped AgLa(MoO4)2 Green Upconversion Phosphor |
| |
| Authors: | Ting Li Chongfeng Guo Shaoshuai Zhou Changkui Duan Min Yin |
| |
| Affiliation: | 1. National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaanxi Province, National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Institute of Photonics & Photon‐Technology and School of Physics, Northwest University, Xi'an, China;2. School of Physical Science, University of Science and Technology of China, Hefei, China |
| |
| Abstract: | Er3+–Yb3+ codoped AgLa(MoO4)2 phosphors with intense green emission from 2H11/2/4S3/2 → 4I15/2 transitions and negligible red emission from 4F9/2 → 4I15/2 transition of Er3+ were synthesized by sol–gel process. Its temperature sensing performance was evaluated based on the temperature dependence of fluorescence intensity ratio (FIR) of two green emission bands in the range 300–510 K. The maximum sensitivity of AgLa(MoO4)2: 0.02Er3+/0.4Yb3+ is approximately 0.018 K?1 at 480 K, which is much higher than those of reported samples based on green emissions of Er3+. Result suggests that AgLa(MoO4)2: Er3+/Yb3+ has a great potential application in optical temperature sensors. |
| |
| Keywords: | |
|
|
