Highly efficient transparent Zn2SiO4:Mn2+ phosphor film on quartz glass

Highly efficient transparent Zn2SiO4:Mn2+ film phosphors on quartz substrates were deposited by the thermal diffusion of sputtered ZnO:Mn film. They show a textured structure with some preferred orientations. Our film phosphor shows, for the best photoluminescence (PL) brightness, a green PL brightness of about 20% of a commercial Zn2SiO4:Mn2+ powder phosphor screen. The film shows a high transmittance of more than 10% at the red-color region. The excellence in PL brightness and transmittance can be explained in terms of the textured crystal growth with a continuous gradient of Zn2SiO4: Mn2+ crystals.