Optical Properties of Undoped and Dy³⁺-Doped Boro-Tellurite Glass

Abstract:

A series of undoped and Dy³⁺-doped boro-tellurite glasses were prepared, and their optical properties have been studied through XRD, absorption, optical band gap energy and photoluminescence. The XRD pattern has been used to confirm the amorphous nature of the prepared glass. The optical absorption spectra showed eight absorption bands which corresponded to ⁴I_15/2, ⁴F_9/2, ⁶F_3/2, ⁶F_5/2, ⁶F_7/2, ⁶F_9/2, ⁶F_11/2 and ⁶H_11/2 transitions from the ground state, ⁶H_15/2. The optical band gap energy, E_opt for undoped glass was 3.08 eV and the Dy³⁺-doped glasses E_opt values varied from 3.16 3.24 eV. The emission spectra from photoluminescence spectroscopy showed two dominant emission peaks at 483 nm and 574 nm with an excitation wavelength of 325 nm (3.82 eV). Keywords: X-ray diffraction, boro-tellurite glass, photoluminescence, absorption spectrum, UV-Vis spectroscopy, energy band gap.

• Periodical: Advanced Materials Research (Volume 895)
• Pages: 194-199
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.895.194
• Online since: February 2014
• Authors: Atiqah Ab Rasid, Husin Wagiran, Suhairul Hashim, Rosli Hussin, Zuhairi Ibrahim
• Keywords: Absorption Spectrum, Boro-Tellurite Glass, Energy Band Gap, Photoluminescence (PL), UV-VIS Spectroscopy, X-Ray Diffraction (XRD)

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