Development of reddish-orange color emission material from Eu2O3-doped lithium calcium borate glasses

Abstract

The Eu3+ ions-doped lithium calcium borate glasses were synthesized by melt-quenching technique with various Eu3+ ion concentrations to investigate their physical, optical, and luminescence properties. The results showed that the density and the molar volume tended to be increased along with increased Eu3+ ion concentration. The absorption spectrum of the sample glass reveals all 4 absorption peaks in both visible and near infrared at wavelengths of approximately 464, 530, 2100 and 2205 nm. The emission spectra of the glasses were illustrated the highest emission intensity at 613 nm wavelength. The CIE-1931 chromaticity investigation showed that Eu3+ ion doped glasses emitted the light with a reddish-orange color. Therefore, it is possible to develop these glasses for the future application of reddish-orange light emitting devices.