Preparation of blue-emitting CaMgSi2O6:Eu2+ phosphors in reverse micellar system and their application to transparent emissive display devices

Blue-emitting Eu2+-doped CaMgSi2O6 phosphors were prepared by the reverse micelle method. The resultant particles were nanocrystalline with a grain size of about <300 nm and exhibited a characteristic blue emission spectrum centered at 445 nm induced by the oxygen coordinated Eu2+ ions. By using the corresponding nanophosphors followed by the formation of a uniform phosphor layer, we have demonstrated the mini-sized transparent plasma-discharge panels and investigated their luminance characteristics. Phosphor coated panel is properly transparent, ≥65%, at the visible wavelength region and illuminates a characteristic blue emission under Ne/Xe plasma discharge conditions. Thus, we can obtain a fast decaying, robust blue-emitting silicate phosphor layer under excited plasma radiation for upcoming emissive display devices like as transparent and three-dimensional plasma display panels.

Graphical abstractBlue-emitting CaMgSi2O6:Eu2+ nanophosphors coated transparent luminescent layers can be obtained. It illuminates the characteristic blue emission, spectrum centered at 425 nm wavelength, under the Ne–Xe mixed gas plasma discharge condition.Figure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Blue-emitting CaMgSi2O6:Eu2+ nanophosphors via reverse micelle method. ► Transparent blue-emitting layer was prepared by using corresponding phosphors. ► Fast decaying with degradation-free luminescent layer under plasma radiation. ► Promising luminescent layer for the upcoming plasma discharged transparent displays.