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The Dy 3+  doped lithium sodium potassium borate glasses with white light-emitting were prepared by the melt quenching technique. In this work, optical, photoluminescence properties and Judd-Ofelt analysis of borate glasses have been investigated. For optical properties, Dy 3+  doped glasses showed the absorption in visible and near-infrared region, which originate from  6 H 15/2  ground state to higher state. While the luminescence properties of Dy 3+  doped glasses, the emission spectra were presented more intense at 484 nm (blue light) and 574 nm (yellow light) which are essential for white light emitting materials, whilst decay time decrease with an increase of Dy 2 O 3  contents. The emission intensity of Dy 3+  doped glasses were enhanced by adding Dy 2 O 3  concentrations until 0.5 mol%, after that the emission intensities were decreased due to the concentration quenching effect. Judd-Ofelt is analyzed by using the absorption and photoluminescence results, The stimulated emission cross-section has been investigated in this work. The CIE 1931 chromaticity investigation shows that Dy 3+  doped glass emitted light with white color. Hence, these glasses may be suitable candidates for use in W-LEDs material.

White Light Emission and Judd-Ofelt Analysis of Dy 3+ Doped Mixed Alkali Borate Glass for W-LEDs Material