Optical and electrical analysis of Rhodamine 110 chloride/PVA-PEG for smart and flexible optical sensor technology

Abstract Polyvinyl alcohol (PVA)/Polyethylene glycol (PEG) (90:10 wt%) polymeric nanocomposite films were prepared via a simple casting technique with Rhodamine 110 chloride (Rh-110) dye for optoelectronics with various weight ratio percentages (0, 0.06, 0.1,0.2, 0.4, 0.6 1.25, 2 and 4.0 wt%) of Rh-110 doped PVA/PEG polymeric blend composite films. The produced films have been studied with instruments like (XRD and FT-IR) spectroscopic methods, UV-visible-NIR spectrophotometer, and dielectric spectroscopy. The absorbance ( Abs ) and transmittance T(λ) were measured and analyzed. Absorption spectra in multiple bands are generated between 215 and 620 nm when Rh-110 is added to the PVA-PEG matrix, according to the examination of transmittance curves of Rh-110 /PVA-PEG. Rh-110/PVA-PEG has a transmittance CUT-OFF in the 200–550 nm wavelength range, making it ideal for He–Ne lasers with wavelengths of 532.8 nm. The optical properties of the Rh-110/PVA-PEG polymeric composite films were computed. Moss, Reddy, Anani, and Kumar-Singh relationships have been employed to determine the refractive index values of the materials. Analyses were performed on various electrical properties, including AC conductivity, dielectric constant, and dielectric loss. As a result, the synthesized Rh-110/PVA-PEG polymeric films may be used in various promising and practical optoelectronic applications, including lasers, optical filters, optical communication, light-emitting diodes, and optical switching.