Chemical deposition of Ag and Ag 2 O on grafting film of PET-COOH by photografting polymerization for optoelectronic application

Highly flexible photodetector with a great efficiency related to its highly response to the photons is prepared with simple techniques and low costs. This optoelectronic is based on the photografting acrylic acid is utilized to adjust the surface of PET films to fasten with silver ions. Ag and Ag 2 O were formed onto the surface of the photografting PET with acrylic acid after reducing by sodium boron tetrahydrate. The topography and chemical structure of the pristine PET-COOH and PET-COOH/Ag-Ag 2 O films is characterized using scanning electron microscope (SEM), X-ray diffractometer, energy-dispersive X-ray analysis (EDX), and Fourier transform infrared spectroscopy. From the SEM analyses, the formation of nanomaterials with an average particle size of 100 nm is confirmed. The incorporation of Ag-Ag 2 O in the PET-COOH membrane enhances the optical properties that cover all the optical absorbance regions, with a small bandgap of 2.74 eV. The PET-COOH/Ag-Ag 2 O photodetector had a nonohmic character and it was sensitive to monochromatic wavelength. The responsivity and specific detectivity of PET-COOH/Ag-Ag 2 O photodetector were 0.83 mA/W and 1.9 × 10 11 Jones, respectively, for 390 nm monochromatic wavelengths. Soon, our team works on synthesis a prototype of this optoelectronic device for industrial applications.