Effect of erbium nanoparticles on structural and spectroscopic properties of bio-silica borotellurite glasses containing silver oxide

Abstract

Er 3+ NPs doped bio-silica borotellurite glasses containing silver oxide were prepared using melt quenching techniques. The silica used was extracted from rice husk by acid leaching process. Optical absorption and photoluminescence properties of the glass samples were studied. The samples were confirmed to be amorphous in nature from the XRD results. The FTIR results reveal the existing functional groups in the glass structure. XRF result shows that 98.6% silica was obtained from the rice husk. The optical absorption spectra revealed that fundamental absorption edge shifts to longer wavelength as the content of erbium NPs increases. The value of band gap had been calculated and shown to be increased with an increase content of erbium NPs. The Urbach energy was shown to be linearly decreased with an increase in content of erbium NPs oxides. The introduction of silver oxides modifies the optical properties of the glass. The emission cross-section (δe) and gain bandwidth (FWHM ×δe) for 4 I 13/2 → 4 I 15/2 transition were calculated from the McCumber theory. The photoluminescence spectra revealed three emission bands corresponding to 4 H 11/2 -4 I 15/2 (470 nm), 4 S 3/2 -4 I 15/2 (561 nm) and 4 F 9/2 → 4 I 15/2 (758 nm) transitions assigned to green and red emissions respectively. The results suggest that these glasses might be used as a promising candidate as well as gain media for solid state lasers.

Advanced composite glasses with metallic, perovskite, and two-dimensional nanocrystals for optoelectronic and photonic applications

“…Halimah et al reported on the synthesis and optical characterization of an erbium NP doped silica borotellurite bioactive glass system containing silver oxide. 40 The promising results of this work showed that this type of glass could be used as gain medium for solid state lasers. Going on further, Machado et al reported the synthesis of co-doped Er 3+ /Yb 3+ / Ce 3+ tellurite glasses containing copper (Cu) NPs.…”

Dielectric Constant, Metallization Criterion and Optical Properties of CuO Doped TeO2–B2O3 Glasses

“…electric furnace to eliminate any moisture due to the hygroscopic nature of B 2 O 3 [10]. Again at 900°C for melting, the crucible was then heated for two hours.…”

“…(2019) [7] and Umar et al (2017)[8], tellurite glasses offer poor thermal and chemical stabilities as well as high phonon energies which require the addition of other oxides such as SiO 2 [9], B 2 O 3 [10], P 2 O 5 [6], ZnO [11] and other modi er oxides for improvements.…”

Structural, elastic and thermo-physical properties of Er2O3 nanoparticles doped bio-silicate borotellurite glasses

“…Glass science and technology research in the present days has been giving great attention to the fabrications and utilizations TeO 2 -based glasses [8]. Tellurium oxide based glasses have demonstrated more advantages over other silicate and phosphate glasses due to their low melting point, high rare RE ions solubility, high effect of stark splitting, high refractive index and high optical transparency in wide spectral region [9][10][11].…”