Synthesis and luminescence investigation of Eu3+and Dy3+ doped NaAl (PO3)4 glass for solid state lighting applications

Phosphite based glass phosphors have been a potential candidate in the field of luminescent spectroscopy. In this respect, the proposed work of Eu3+ and Dy3+ doped NaAl(PO3)4 glass samples prepared by melt quenching synthesis technique. The emission spectrum of Eu3+ doped NaAl(PO3)4 glass demonstrate sharp and intense peaks at 594 nm and 614 nm region ascribed to typical 5D0 -> 7F1 and 5D0 -> 7F2 transitions of Eu3+ ions. In the case of Dy3+ doped NaAl(PO3)4 glasses, emission spectra display an emission band at 482 nm (blue colour) and 576 nm (yellow colour) due to the 4F9/2 to 6H15/2 and 4F9/2 to 6H13/2 transitions of Dy3+ ions. Furthermore, Commission Internationale de l'E<acute accent>clairage (CIE) chromaticity coordinates and colour purity of the prepared samples were calculated using a CIE colour calculator. The CIE chromaticity diagram depicts coordinate in the near red and near white color region for Eu3+ and Dy3+ doped samples, respectively. According to obtained results, it was found that prepared glass samples have a huge potential for future investigation in the field of solid-state lighting and display devices.