NaYF4 ∶ Yb3+ / Nd3+ 纳米粒子近红外热增强发光及温感研究

作者：Yan Long; Liu Hui-Ming; Cai Zhi-Yuan; Zhou Bo^*

来源：稀土, 2023, 44(1): 140-147.

DOI：10.16533/J.CNKI.15-1099/TF.20230042

• energy transfer
• luminescence intensity ratio
• near-infrared luminescence
• temperature sensing
• thermal coupling levels

A series of NaYF4 ∶ Yb3+ / Nd3+ nanoparticles were synthesized by coprecipitation method. The near-infrared emissions within the first biological window with peaks at 752, 804 and 862 nm were recorded under 980 nm excitation, corresponding to the 4F7/ 2→4I9/ 2, 4F5/ 2→4I9/ 2, and 4F3/ 2→4I9/ 2 transitions of Nd3+, respectively. In particular, the luminescence of Nd3+ shows a rapid increase with lifting the temperature instead of thermal quenching. For instance, the 752 nm emission recorded at 443 K is 83. 7 times higher than that at 303 K. The temperature sensing property was investigated by using the luminescence intensity ratio of Nd3+ emissions, showing relative sensitivity up to 3. 07% K-1(303 K). All experiment results indicate that NaYF4 ∶ Yb3+ / Nd3+ nanoparticles are an ideal candidate for temperature sensing materials. ? 2023 Editorial Office of Chinese Rare Earths.

• 单位
  发光材料与器件国家重点实验室; 华南理工大学