Structure and photoluminescence of Mn<sup>2+/4+</sup>-activated doubly ordered spinel Mg<sub>4</sub>(Ga/Al)SbO<sub>8</sub>: site-selective Al<sup>3+</sup>-to-Ga<sup>3+</sup> substitution enabling Mn<sup>4+</sup> accumulation, excellent anti-thermal quenching of Mn<sup>2+</sup> green emission, and optical thermometry
Zien Cheng, Guangxiang Lu, Yuxuan Qi, Jinmei Huang, Gonggui Yan, Leiming Fang, Maxim Avdeev, Tao Yang, Pengfei Jiang
Abstract
The site-selective Al 3+ -to-Ga 3+ substitution in doubly ordered spinel Mg 4 (Ga/Al)SbO 8 :Mn 2+/4+ can manipulate the Mn distributions, thereby resulting in a tunable emission color and controllable optical thermometry sensitivity.
Topics & Concepts
SpinelPhotoluminescenceMaterials scienceManganeseCrystallographyAnalytical Chemistry (journal)Physical chemistryChemistryOptoelectronicsMetallurgyChromatographyLuminescence Properties of Advanced MaterialsGa2O3 and related materialsPerovskite Materials and Applications