Gamma irradiation-induced changes in structural, linear/nonlinear optical, and optoelectrical properties of PVB/BiVO4 nanocomposite for organic electronic devices

• Published in: Optical and quantum electronics Vol. 55; no. 13
• Main Authors: Abdel Maksoud, M. I. A., Fahim, Ramy Amer, Kassem, Said M., Awed, A. S.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.12.2023; Springer Nature B.V
• Subjects: Bismuth oxides; Characterization and Evaluation of Materials; Computer Communication Networks; Electrical Engineering; Electronic devices; Gamma irradiation; Gamma rays; Lasers; Nanocomposites; Nonlinear optics; Optical Devices; Optical properties; Optics; Oscillators; Parameters; Permittivity; Photonics; Physics; Physics and Astronomy; Plasma frequencies; Polyvinyl acetal resins; Polyvinyl butyral; Refractivity; Relaxation time; Vanadates; Gamma irradiation; Optoelectrical; Linear/nonlinear optical; PVB; BiVO
• ISSN: 0306-8919; 1572-817X
• DOI: 10.1007/s11082-023-05291-w

Herein, nanocomposite films based on polyvinyl butyral (PVB) and BiVO 4 plates were synthesized through solution casting. The present study aims to investigate the impact of varying doses of gamma irradiation (0, 15, 30, 60, and 90 kGy) on the structural, dispersion, linear/nonlinear optical, and optoelectrical properties of PVB/BiVO 4 nanocomposite films. The effects of gamma irradiation on various optical characteristics, such as refractive index (n), extinction coefficient (k), and other related parameters, have been observed. The study of dielectric behavior and the derivation of optoelectrical parameters, including high-frequency dielectric constant (ε ∞ ), plasma frequency (ω P ), relaxation time (τ), and optical mobility (µ opt. ), were conducted using the real and imaginary parts of the dielectric constants ε r and ε i . In addition, the linear optical susceptibility (χ (1) ), the third-order nonlinear optical susceptibility (χ (3) ), and the nonlinear refractive index (n 2 ) were studied as a function of gamma irradiation doses. Furthermore, the results demonstrate that the average oscillator wavelength (λ 0 ) values, oscillator strength (S 0 ), and optical conductivity ( σ op t ) vary significantly after gamma radiation treatment. Overall, the strong correlations between the linear/nonlinear optical and optoelectrical parameters of the irradiated PVB/BiVO 4 nanocomposite films make them suitable for application in flexible organic electronic devices.