Delayed luminescence from ZnO ceramics upon microwave-induced plasma emission

A delayed luminescence from the ZnO ceramics upon microwave-induced plasma emission was observed and its hybridized excitation mechanism was investigated. A phenomenological model of the luminescence is proposed to explain the occurrence of the hybrid excitation process and confirmed that the hybridization is by the photon of luminescence through atomic plasma emission and by the microwave depending on its power. This finding provides a distinctive methodology for studying the physics of the interaction between microwave and matter.

► Delayed luminescence from the ZnO ceramics upon microwave-induced plasma emission.
► Unrealistically higher photon energy of the delayed luminescence than thermal radiation spectra.
► Luminescence depends on the photon of the atomic plasma emission and microwave power.
► Phenomenological model of the luminescence confirm the hybridized excitation mechanism.