Antithermal Quenching Upconversion Luminescence via Suppressed Multiphonon Relaxation in Positive/Negative Thermal Expansion Core/Shell NaYF4:Yb/Ho@ScF3 Nanoparticles

Yilin Wang; Jiahui Rui; Hao Song; Ze Yuan; Xiaoqiao Huang; Jingyao Liu; Jie Zhou; Ce Li; Hui Wang; Shuaihao Wu; Ran Chen; Mingdi Yang; Qilong Gao; Xiaoji Xie; Xianran Xing; Ling Huang

doi:10.1021/jacs.3c10886

Antithermal Quenching Upconversion Luminescence via Suppressed Multiphonon Relaxation in Positive/Negative Thermal Expansion Core/Shell NaYF₄:Yb/Ho@ScF₃ Nanoparticles

J Am Chem Soc. 2024 Mar 13;146(10):6530-6535. doi: 10.1021/jacs.3c10886. Epub 2024 Feb 27.

Authors

Yilin Wang^{1

2}, Jiahui Rui¹, Hao Song¹, Ze Yuan¹, Xiaoqiao Huang¹, Jingyao Liu¹, Jie Zhou¹, Ce Li¹, Hui Wang³, Shuaihao Wu³, Ran Chen³, Mingdi Yang⁴, Qilong Gao⁵, Xiaoji Xie¹, Xianran Xing⁴, Ling Huang^{1

2

3}

Affiliations

¹ Institute of Advanced Materials (IAM), Nanjing Tech University, Nanjing 211816, China.
² College of Materials Science and Engineering, Nanjing Tech University, Nanjing 211816, China.
³ School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China.
⁴ Beijing Advanced Innovation Center for Materials Genome Engineering, Institute of Solid State Chemistry, University of Science and Technology Beijing, Beijing 100083, China.
⁵ International Laboratory for Quantum Functional Materials of Henan, School of Physics and Microelectronics, Zhengzhou University, Zhengzhou 450001, China.

PMID: 38410847
DOI: 10.1021/jacs.3c10886

Abstract

Thermal quenching (TQ) has been naturally entangling with luminescence since its discovery, and lattice vibration, which is characterized as multiphonon relaxation (MPR), plays a critical role. Considering that MPR may be suppressed under exterior pressure, we have designed a core/shell upconversion luminescence (UCL) system of α-NaYF₄:Yb/Ln@ScF₃ (Ln = Ho, Er, and Tm) with positive/negative thermal expansion behavior so that positive thermal expansion of the core will be restrained by negative thermal expansion of the shell when heated. This imposed pressure on the crystal lattice of the core suppresses MPR, reduces the amount of energy depleted by TQ, and eventually saves more energy for luminescing, so that anti-TQ or even thermally enhanced UCL is obtained.