In this paper, a very simple and cost effective dip coating method to obtain novel hybrid PVA–InZnO transparent thin films and sandwich capacitor structures for future transparent device applications.
New hybrid Poly (vinyl) alcohol (PVA)-InTiO transparent thin film was prepared by dip-coating method. Characteristic of M-O vibrations (In-O and Ti-O) were confirmed from Fourier transform infrared spectroscopy. The X-ray diffraction patterns revealed that the mixed phases of rutile TiO 2 and cubic In 2 O 3 were present in the hybrid film. Scanning electron microscopy images showed spherical shape mixed In 2 O 3 and TiO 2 nano particles embedded in the polymer matrix. The presence of elements such as In, Ti, and O are confirmed from energy dispersive X-ray spectroscopy. High transmittance (80%) and wide band gap energy (4.1 to 3.75 eV) values were observed from optical study. High dielectric constant (18 to 23) and low dielectric loss values were obtained from dielectric study. The observed amorphous nature, enhanced optical, and dielectric properties indicated that the hybrid thin film could be used as high-к layer in transparent thin film transistor and in opto-electronic device applications in near future.
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