| Abstract Scope |
Host matrices of phosphors play a vital role on determining their properties. In recent years, to solve their inherent thermal quenching (TQ) problem, especially at elevating temperatures, negative thermal expansion (NTE) materials have been explored as a novel strategy to achieve outstanding anti-TQ performance of phosphors by taking advantages of the NTE phenomenon where some materials shrink rather than expand when heated. In this talk, the emergence of investigating NTE materials as a type of new hosts for phosphors will be presented based on both experimental data and density functional theory (DFT) calculations. The application potentials of this type of phosphors, e.g., as luminescent thermometers at high temperature based on both emission lifetime and intensity ratio read-out modes, will be discussed. Current studies provide inspiration to combine NTE phenomenon with other strategies to achieve broad and dramatic anti-TQ phosphors with enhanced performance for various optical applications. |