The size-dependent thermal enhancement of down-shifting luminescence based on non-Yb3+-mediated energy migration

• Published in: Journal of luminescence 2024-06, Vol.270, p.120575, Article 120575
• Main Authors: Chen, Rui, Xu, Jie, Xu, Ju, Lin, Hang, Cheng, Yao, Wang, Yuansheng
• Format: Article
• Language: English
• Subjects: Down-shifting luminescence; Non; Size-dependent; Thermal enhancement; Yb3+-involved luminescence process
• ISSN: 0022-2313; 1872-7883
• DOI: 10.1016/j.jlumin.2024.120575

The past few years have witnessed extensive attention to the size-dependent up-conversion luminescence thermal enhancement of Ln3+ doped nanoparticles, where the involvement of Yb3+ ions seem to be essential. In this work, a size-dependent down-shifting luminescence thermal enhancement behavior of NaGdF4:Ce3+/Tb3+ has been reported. Specifically, it is the first time to realize the size-dependent luminescence thermal enhancement with a non-Yb3+-involved luminescence process. We demonstrate that the size-dependent luminescence behavior is ascribed to the establishment of energy migration channels via Gd3+ sublattice. These findings offer a feasible way to design the luminescence thermal behavior of nanophosphors with a broader range in terms of both chemical composition and luminescence mechanism. The size-dependent thermal enhancement of down-shifting luminescence for nanophosphor has been realized with non-Yb3+-involved luminescence process. [Display omitted] •The size-dependent thermal enhancement of down-shifting luminescence is realized with non-Yb3+-involved luminescence process.•Gd3+ sublattice is confirmed to play the pivotal role in the energy-migration-mediated luminescence thermal enhancement.•The findings offer a feasible way to design the luminescence thermal behavior of nanophosphors with a broader range.