Structural and optical features of aluminum lead borate glass doped with Fe2O3

Fe2O3-doped aluminum lead borate glass was synthesized using the melt-quenching technique with a chemical compositional of 55B(2)O(3)-30Pb(3)O(4)-(15 - x) Al2O3-xFe2O3, wherex(0 <= x <= 5). X-ray diffraction was used to confirm the nature of this glass. The structural, optical, and dielectric properties of the glass were investigated. Transmittance and absorbance measurements were developed to establish and investigate the optical characteristics of these samples. The fundamental absorption edge shifted toward lower photon energy concerning the concentration of Fe2O3. The absorption coefficient, optical band gap, Urbach tail, steepness, and skin depth of the glass were estimated and discussed. The obtained result revealed that an indirect optical energy band gap E-g was decreased from 2.67 to 2.04 eV; meanwhile, it decreased from 3 to 2.31 eV in a direct transition. While the Urbach energy E-u was increased from 0.21 to 0.36 electron Volt. The extinction coefficient, refractive index, and optical and electrical conductivities of the glass were discussed as functions of Fe2O3 content. The real and imaginary parts of the dielectric constant were examined. Further physical constants like lambda(out-off), tan delta, molar reflectivity, molar polarizability, and others were investigated.

Automated summary

The study investigated the structural, optical, and dielectric properties of Fe2O3-doped aluminum lead borate glass, revealing changes in optical characteristics with increasing Fe2O3 content. The absorption edge shifted towards lower photon energy, and various optical parameters such as absorption coefficient, optical band gap, Urbach energy, and dielectric constants were examined and discussed.