@article{Wei2025, 
author = {Yang Wei and Shuaihao Wu and Ran Chen and Chao Sun and Feng Wang and Xinru Ding and Hui Wang and Yanqing Lu and Ling Huang},
title = {Anti-thermal quenching upconversion luminescence of Cr3+ in Sc2(WO4)3:Yb/Cr},
year = {2025},
journal = {Nano Research},
volume = {18},
number = {2},
pages = {94907097},
keywords = {upconversion luminescence, Cr3+, Sc2(WO4)3, anti-thermal quenching, luminescence thermometry},
url = {https://www.sciopen.com/article/10.26599/NR.2025.94907097},
doi = {10.26599/NR.2025.94907097},
abstract = {Although widely need from various applications, the luminescence of Cr3+ is easily prone to thermal quenching (TQ), causing remarkable intensity reduction as temperature rises, and posing a significant constraint in applications such as high-power lighting, solid-state lasers, and high-temperature optical sensing. Numerous strategies have been reported to realize anti-thermal quenching luminescence (ATQL) of Cr3+. However, researches into anti-thermal quenching upconversion luminescence (ATQUL) of Cr3+ are barely seen. Herein, taking advantage of the enhanced luminescence of Yb3+ facilitated by the Frenkel defects formed within Sc2(WO4)3 (SWO) matrix upon heating, we have established Yb3+  → Cr3+ cooperative sensitization pathway for upconversion luminescence of Cr3+, and achieved ATQUL of Cr3+ in SWO:Yb/Cr. Our findings have not only offered novel perspectives for medium to high-temperature applications of Cr3+-based phosphors, the design principles are also extendable to other transition metal ions.}
}