Influence of europium (Eu3+) ions on the optical properties of silver lead borate glasses

Bulletin of materials science

K Keshavamurthy¹  B Eraiah¹ 

[1] Department of Physics, Bangalore University, Bangalore 560 056, India$$Department of Physics, Bangalore University, Bangalore 560 056, IndiaDepartment of Physics, Bangalore University, Bangalore 560 056, India$$

关键词: Optical bandgap;    refractive index;    Urbach energy.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The influence of europium (Eu³⁺) ions on the optical properties of silver lead borate glasses of the 𝑥Eu₂O₃â€�??(1 â€�?? ð‘�?)Ag₂Oâ€�??29PbOâ€�??70B₂O₃ (ð‘�? = 0, 0.1, 0.2, 0.3, 0.4 and 0.5 mol%) glass system prepared by the conventional melt quenching technique and their physical and optical properties were investigated. The UV absorption spectra were recorded at room temperature in the wavelength range of 200â€�??600 nm. From the absorption edge data, it is found that both the direct and indirect transitions and their values are ranging from 3.19 to 3.54 and 2.50 to 3.07 eV, respectively. The Urbach energy values for these glasses were found to be in the range of 0.39â€�??0.52 eV. The refractive indices have also been evaluated with respect to different molar concentrations of Eu₂O₃ and their calculated values are ranging from 1.598 to 1.654.

【 授权许可】

Unknown