The Comparative Studies of TeO₂: ZnF₂: BaO doped Sm₂O₃ Glass Which Prepare in a Different Atmosphere

Abstract

Sm3+ ion doped TeO2: ZnF2: BaO glasses are prepared in different atmospheres by melt quenching technique. The glasses structure was analyzed using a Rigaku SmartLab SE X-ray diffractometer (XRD). Absorption spectra (Shimadzu, 3600) in the wavelength between 400 to 1800 nm were recorded using a UV-VIS-NIR spectrophotometer. They found a total of seven peaks, which corresponded with the energy transitions of Sm3+ ion from the ground level 6H5/2 → 6F11/2, 6F9/2, 6F7/2, 6F5/2, 6F3/2, 6H15/2, and 6F1/2 at 944, 1083, 1238, 1383, 1485 and 1543 nm respectively. A spectrofluorophotometer (Cary-Eclipse) was used to detect the photoluminescence, and the excitation spectra were obtained from measurements in wavelengths of 300 to 550 nm using the emission spectrum at 597 nm. from 6H5/2 (ground state) → 4D7/2 (345), 4D3/2 (362), 6P7/2 (375), 6P3/2 (403), 6P5/2 (417) 4G9/2 (438), 4I13/2 (462) 4I11/2 (474), 4G7/2 (501) and 4F3/2 (526) the excited states. Using a 405 nm exciting wavelength, the emission spectra were captured in the 500–750 nm. The lifetime of the sample between the sample prepared in the air atmosphere and the CO2 atmosphere at the excitation wavelength of 405 nm was 0.679 and 0.662 ms, respectively.