Luminescence Properties of Dy3+ and Sm3+: Potassium Lithium Borate Glass

The present paper describes the spectral properties of sm3+ (0.4 mol%) and dy3+ (0.4 mol%) ions-doped 20li2o–10k2o–70b2o3 glasses. x-ray diffraction method was use to confirm the amorphous phase of samples. the physical properties have been determined based on uv absorption spectra. the hypersensitive transition of dy3+ and sm3+ is found due to transition of (6f11/2,6h9/2) and (6f7/2), respectively. the emission bands of dy3+: glass has shown around 572 nm, 612 nm and 646 nm; these emissions are attributed to the transitions of 4f9/2 6h15/2 (yellow), 4f9/2 - 6h13/2 (red) and 4f9/2 -6h11/2 (red). with regard to sm3+: glass has three emission bands those have been generated from 4g5/2  6h5/2 (616 nm), 4g5/2  6h 7/2 (660 nm) and 4g5/2  6h9/2 (719 nm) transitions. the current results promise several applications in optical fields such as uv-sensor, developing new color light sources and tunable visible lasers.