无机荧光粉间隙发光中心研究进展

Abstract： Inorganic phosphors are widely used in important fields such as solid-state lighting and displays， mak• ing them a key focus in the research on luminescent materials.Typically， the design of inorganic phosphors relies on the "crystallographic site engineering"， where activator ions partially substitute suitable metal cations in hosts to form luminescence centers.This strategy requires the inorganic host to provide standard crystallographic sites for acti• vator ions occupancy； otherwise， it is difficult to realize effective doping and subsequently efficient luminescence.In recent years， it has been discovered that even in some hosts lacking standard substitution sites， efficient lumines• cence can be achieved when activator ions enter interstitial crystallographic sites， leading to the development of inter• stitial luminescent materials.This review systematically summarizes the construction and characterization of intersti• tial luminescence centers， and the synthesis and application of interstitial phosphors， while also discussing the oppor• tunities and challenges in future research.The construction of interstitial luminescence centers not only provides a new perspective for developing inorganic phosphors but also holds significant importance for exploring and under• standing novel luminescence properties in existing phosphors.Keywords： inorganic phosphor； interstitial luminescence center； luminescence property， local structure