A Novel Oxygen Vacancy in ScPO 4 :Er for Luminescence Anti‐Thermal Quenching

作者：Hao Song, Hui Wang, Junhe Zhou, Chenyi Wang, Yilin Wang, Hongyu Wang, Xiaobin Tang, Chunxian Tao, Qiuqiang Zhan, Jianhua Liu, Ling Huang · 发表于：Angewandte Chemie International Edition · 年份：2025 · DOI：10.1002/anie.202510707 · 被引用次数：10 · 研究领域：Luminescence Properties of Advanced Materials、Solid State Laser Technologies、Perovskite Materials and Applications

Abstract Different from previously reported shallow defects in ScPO 4 , herein we have uncovered a deep defect, oxygen vacancy ( V O ). The perfect energy level match with 4 S 3/2 / 4 F 9/2 in doped Er 3+ allows V O to accept and store the excitation energy transferred from Er 3+ , which is then released and back‐transferred to Er 3+ upon heating, and finally leads to significant luminescence anti‐thermal quenching (LATQ). Moreover, the concentration of V O can be adjusted by simple atmospheric annealing, which allows modulation of V O → Er 3+ energy transfer for adjustable LATQ in ScPO 4 :Er, i.e., downshifting LATQ up to 843 K and upconversion LATQ till a record‐high temperature of 1323 K, and thus unparalleled performance of the classic compound ScPO 4 :Er in thermophotovoltaics (TPV) and dual‐mode luminescence thermometers.