中国激光, 2015, 42 (12): 1206004, 网络出版: 2015-12-11
ZrO2∶Er3+/Yb3+/Li+纳米晶的上转换荧光特性与温度传感研究
Improved Upconversion Luminescence and Temperature Sensing Performance of ZrO2∶Er3+/Yb3+/Li+ Nanocrystals
材料 上转换发光 荧光强度比 氧化锆 Li+增强 materials upconversion luminescence fluorescence intensity ratio ZrO2 Li+ enhancement
摘要
用溶胶-凝胶法制备ZrO2∶Er3+/Yb3+/Li+纳米晶,研究上转换发光强度随着Li+掺杂浓度的变化关系。根据荧光强度比测温技术,在303 K~753 K 温度区间,研究荧光峰积分强度比和荧光峰峰值比对ZrO2∶Er3+/Yb3+/Li+纳米晶测温性能的影响。当采用525和562 nm 处的峰值比时,在440 K 获得最大的测温灵敏度为0.0050 K1。
Abstract
ZrO2∶Er3+/Yb3+/Li+ nanocrystals are synthesized by sol- gel method. Li+ ions doped in ZrO2∶Er3+/Yb3+ nanocrystals can greatly enhance the upconversion luminescence intensity of Er3 + ions. And the effect of Li+ ions on enhancement of upconversion luminescenceis is discussed. The fluorescence intensity ratio of the green upconversion luminescence bands and that of the green upconversion luminescence peaks are studied as a function of temperature in a range of 303 K~753 K. The maximum sensitivity is approximately 0.0050 K- 1 at 440 K by adopting the fluorescence intensity ratio of green upconversion luminescence peaks at 525 and 562 nm . It suggests that ZrO2∶Er3+/Yb3+/Li+ nanocrystals is a suitable probe for optical temperature sensing by the fluorescence intensity ratio technique.
李栋宇, 黄贞, 全军, 谢木标, 聂仲泉, 黄传海, 王玉晓. ZrO2∶Er3+/Yb3+/Li+纳米晶的上转换荧光特性与温度传感研究[J]. 中国激光, 2015, 42(12): 1206004. Li Dongyu, Huang Zhen, Quan Jun, Xie Mubiao, Nie Zhongquan, Huang Chuanhai, Wang Yuxiao. Improved Upconversion Luminescence and Temperature Sensing Performance of ZrO2∶Er3+/Yb3+/Li+ Nanocrystals[J]. Chinese Journal of Lasers, 2015, 42(12): 1206004.