科研之友
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摘要
In this work we demonstrate the preparation of Er3+ doped perovskite ferroelectric Na(0.5)Bia(5)TiO(3) nanocrystals and their application in temperature sensing. The samples were synthesized via a facile hydrothermal method. Upconversion emission at 528 nm and 547 nm from two thermodynamically coupled excited states of Er3+ were recorded in the temperature from 80 K to 480 K under the excitation of a 980 nm diode laser. The emission intensity ratio (I-528/I-547) as a function of the temperature was investigated. A sensitivity of 0.0053 K-1 is observed at 400 K, suggesting they are promising candidate for nanothermometers.
- 出版日期2016-11
- 单位湖南大学
