Synthesis and technical analysis of 6-butyl-3-[(4-chlorophenyl)diazenyl]-4-hydroxy-2H-pyrano[3,2-c] quinoline-2,5(6H)-dione as a new organic semiconductor: Structural, optical and electronic properties

Abstract A novel 6-butyl-3-[(4-chlorophenyl)diazenyl]-4-hydroxy-2H-pyrano[3,2-c] quinoline-2,5(6H)-dione (dye 2) was effectively synthesized. The structure of (dye 2) has been set up using its accurate spectral and elemental analysis statistics. X-ray diffraction (XRD) analysis exhibited that (dye 2) has a polycrystalline nature. Scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) were utilized. Optical parameters, as well as absorption index of (dye 2), were calculated using diffused reflectance wavelength measurements range 200–2300 nm. The bandgap in optics was determined by applying the Kubelka–Munk theory. Two optical band gap values (2.57 and 2.33 eV) were obtained. The first value (2.57 eV) is responsible for the direct transition while the other value (2.33 eV) is responsible for the indirect bandgap. AC fields were primarily utilized to calculate and interpret both AC electrical conductivity, the dielectric constant, and the dielectric loss. Finally (dye 2) turns out to be efficiently material and may act as a novel solar cell window due to its high bandgap.