Ethylene glycol-assisted ultrafast synthesis and luminescent properties of novel multifunctional EuSr2F7 and TbSr2F7 nanostructures for WLEDs, displays and anti-counterfeiting

摘要

In this paper, novel EuSr2F7 and TbSr2F7 nanostructures were successfully synthesized via an ultrafast wetchemical route at room temperature. The elemental compositions, morphology, luminescent behaviors, thermal stability, decay curves and quantum yields of the as-prepared samples were investigated. The fabricated white light-emitting diodes (WLEDs) exhibited excellent color rendering index and correlated color temperature values. The security inks and soft polydimethylsiloxane films were prepared for potential anti-counterfeiting and flexible display applications. Eventually, under low accelerating voltage and filament current, the as-prepared samples showed strong cathodoluminescence emission intensity. The above results suggest that the novel EuSr2F7 and TbSr2F7 nanostructures with outstanding luminescent performances could be promising for field-emission displays, WLEDs, flexible display films, and anti-counterfeiting applications.