A novel Ce3+/Mn2+/Eu3+ tri-doped GdF3 nanocrystals for optical temperature sensor and anti-counterfeiting

作者：Xia, Han; Lei, Lei^*; Hong, Wanqing; Xu, Shiqing^*

来源：Journal of Alloys and Compounds, 2018, 757: 239-245.

DOI：10.1016/j.jallcom.2018.05.094

• GdF3 nanocrystals
• Temperature sensor
• Transition metal ions
• Multi-color
• Anti-counterfeiting

Non-contact optical thermometry based on fluorescence intensity ratio (FIR) exhibits potential application in strong electromagnetic and corrosive environment. However, most of the reported systems exhibit high temperature sensitivity only at a narrow temperature range, which limit their practical application. In this work, a novel Ce3+/Mn2+/Eu3+ tri-doped GdF3 nano-thermometry based on different thermal behaviours between Eu3+ and Mn2+ ions is constructed. The calculated relative sensitivity in the whole measured temperature range are beyond 1.08% K-1 and the maximum S-a is about 0.078 K-1 for the 50Ce/8Mn/2Eu: GdF3 NCs, which are superior to several other inorganic nano-thermometry at the same temperature. In addition, these colorimetric temperature sensing materials exhibit potential application in anti-counterfeiting field as well.

• 出版日期2018-8-15
• 单位中国计量大学