Improve and Extend the Range Wavelength of the Photodetector Based on PVP Polymer by Doping it with Manganese Dioxide Via Electrospinning Technique

Electrospinning solution containing manganese dioxide nanoparticles (NPs) was created based on a solvent-controlled method. Pure PVP and PVP doped with MnO2 NPs at ratios of (1, 2, and 3) %wt were used to create nanofibers (NFs) via room-temperature electrospinning technique. Absorbance and the band energy gap (Eg) are an instance of optical qualities that have been investigated. The direct band gap of pure PVP NFs is (4.07 eV), and it reduces slightly with increasing concentrations of MnO2 NPs. At a mixing ratio of 2% MnO2, the rise and fall times were the most brief (26.5 ms and 35.1 ms, respectively), the noise-equivalent power was the smallest (0.0264 pW), and the maximum response was 5.5 A/W. The 2% doping ratio produces a response up to forty times that of pure polymer over a wide range of wavelengths, from 392 nm to 612 nm.