Film based on Y2O3:Eu3 + (5 mol% of Eu3 +) for flat panel display

This paper reports on Y2O3:Eu3 + containing 1 mol% of Ag0 nanoparticle films recovered with a SiO2 layer by using glass foil as a substrate for a possible optical display device application. The obtained film showed an intense emission at 612 nm due to the Eu3 +5D0 → 7F2 hypersensitive transition, a high transmittance in that emission range, an excellent optical quality, and a high absorption only below 300 nm. Moreover, despite the presence of the SiO2 layer used to improve the phosphor adhesion on Corning® foil substrates, the intensity ratios between the emissions assigned to Eu3 +5D0 → 7F2 (dipole electric transition) and 5D0 → 7F1 (dipole magnetic transition) were not affected by it. The x and y coordinate values found in the 1931 Commission Internationale de l'Eclairage Chromaticity Diagram for this film reveal that it has a suitable pure red color emission for optical displays devices.

► Y2O3:Eu3 + containing 1 mol% of Ag0 nanoparticle films recovered with SiO2 layer ► The UV–vis transmittance measurements showed that films keep high transparency. ► Photoluminescence emission features are preserved after film preparation. ► Lifetime values show that the luminescent are not affected by the SiO2 coating. ► Emission color of the films shown to be very pure based on the chromaticity diagram