Synthesis of CoO thin films by pulsed laser deposition method; studying an optical, electrical and sensing properties

Cobalt oxide nanoparticle films (CoO) are created utilizing the glass substrate and the pulse laser deposition method (PLD). Cobalt oxide films were made utilizing this technique, which employed a Nd-Yag pulsed laser with a wavelength of (1064nm). Calculated optical properties and UV-VIS absorption spectra in the ultraviolet range. According to the results of the Hall effect measurement, the produced films are made of (p-type) semiconductors. For cobalt oxide films in a 100 ppm NO2 atmosphere, a gas sensor was used. Cobalt oxide (CoO) films exhibit gas sensitivity (26.072%, 25.834%) at temperatures between 150°C and 200 °C.