Luminescence in  Er<sup>3+</sup> co-doped bismuth germinate glass–ceramics for blue and green emitting applications

Kashif, I.; Ratep, A.; Kashif, I.; Ratep, A.

doi:2023.60.3.511

J. Korean Ceram. Soc. > Volume 60(3); 2023 > Article

Original Article

Journal of the Korean Ceramic Society 2023;60(3): 511-526.
doi: https://doi.org/10.1007/s43207-022-00281-2

Luminescence in Er³⁺ co-doped bismuth germinate glass–ceramics for blue and green emitting applications

I. Kashif², A. Ratep¹

¹Faculty of Women for Art, Science and Education, Department of Physics, Ain Shams University, Heliopolis, Cairo, Egypt
²Faculty of Science, Department of Physics, Al-Azhar University, Nasr City, Cairo, Egypt

Correspondence

I. Kashif ,Email: ismailkashif52@yahoo.com ; ismailkashif@azhar.edu.eg
A. Ratep ,Email: assmakalifa@yahoo.com ; asmaa.ratep@women.asu.edu.eg

Received: August 19, 2022; Revised: November 25, 2022 Accepted: December 18, 2022. Published online: January 9, 2023.

ABSTRACT

Glass samples with the composition 40 Bi₂O₃ -60 GeO₂-x Er₂O₃ are prepared using the melt quenching procedure. Fouriertransform infrared spectroscopy (FTIR), differential thermal analysis (DTA), Ultraviolet/Visible/Near-infrared (UV/Vis–NIR) absorption, photoluminescence spectroscopy (PL), and X-ray diffraction (XRD) are used to characterize the glass and glass– ceramic materials. The glass transition and crystallization temperatures are determined. Crystallization kinetics was studied in non-isothermal conditions. The oscillator strengths and Judd–Ofelt parameters (Ω₂, Ω₄, Ω₆) for reported Er³⁺ absorption transitions are estimated, and they follow the trend Ω₂ > Ω₆ > Ω₄ for observed Er³⁺ absorption transitions. The iconicity of glass samples was unaffected by an increase in Er³⁺ ions. XRD and FTIR confirmed the formation of the Bi₄Ge₃O₁₂ phase after heat treatment of glass samples at the crystallization temperature. The CIE chromaticity diagram computes the CIE chromatic coordinates. The values for all glass and crystal samples are close to bright blue and green. Glass and glass ceramic samples are suitable for green and blue optoelectronics device applications.

Key words: Glass · Ceramic · Infrared (IR) spectroscopy · Differential thermal analysis (DTA) · Luminescence · Optical properties · X-ray diffraction (XRD)