Fabrication and characterization PANI/CuO hybrid films by nebulizer spray pyrolysis technique for diode applications

Polyaniline was synthesized by chemical oxidized method and preparation of CuO nanoparticles using ethanol solvents by low cost sol–gel route. The prepared composite samples are equal ratio of PANI/CuO (1:1) were dissolved in m-cresol solvent and were coated on glass substrate by nebulizer spray pyrrolysis technique at different temperature (100 °C, 150 °C and 200 °C). The obtained films have been characterized by Fourier transform infrared (FT-IR) spectroscopy, SEM, X-ray diffraction (XRD) and I–V characteristics. XRD study confirms the crystalline nature of CuO peaks and shows the CuO interaction with PANI structure. The SEM study shows glouber and granular particles on the surface of PANI/CuO films. FTIR spectrum reveals that the intensity of peak is increased with the increasing temperature of the sample. The higher temperature goes to deviate from the non linearity i.e. they tend toward non-ohmic behavior by I–V characteristics. The maximum conductivity obtained is 1.4 × 10−4 S/cm at 200 °C. I–V characteristics of ITO/PANI/CuO/PCBM/Al device show weak rectifying behavior with non-linear nature.