No abstract

No abstract

Single phase, adherent films of copper oxide nanowires (CuO NWs) were successfully grown on a glass substrate. Titanium nanofilm was pre-coated on the glass substrate to assist the growth of a layer adherent to the substrate. The copper film of 1.5 μm thickness was deposited via physical vapor deposition technique followed by thermal oxidation in air at various temperatures for 4 h. The product was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible (UV-Vis) and Fourier transformation infrared (FT-IR) spectroscopy to find the crystal structure, morphology, phases, and optical properties of the deposited films. The CuO NWs film with 60% transmittance at wavelengths greater than 800 nm was obtained. It can be used as an infrared thermal imaging filter and in optoelectronic devices. The fabricated temperature sensor exhibited high sensitivity in the temperature range of 20 °C to 180 °C.

Temperature sensor of p-CuO/n-SnO2 heterojunction was successfully fabricated and investigated. SnO2 nanostructure was firstly synthesized via chemical vapor deposition. Followed by a top layer of CuO nanoparticles was deposited on SnO2 by drop cast method. The SnO2 film was analyzed via x-ray diffraction (XRD) and scanning electron microscope (SEM). The XRD confirms the formation of the SnO2 nanstructure .The SEM reveals the SnO2 nanoparticles agglomerated together forming a cauliflowers-like nanostructure with a calculated particle size of 17nm. The temperature response corresponding to the relative variation of sensor resistance (ΔR) to a given temperature was measured. It was found that the present sensor has a high sensitivity of 0.56%/°C. Temperature sensor p-CuO/n-SnO2 heterojunction was found to be quite promising material in the temperature range of 25-200⁰ C.

No abstract