Search

Highlights: [•] NiO–Ag films were deposited using DC reactive magnetron sputtering technique. [•] Surface morphology was highly influenced by reactive gas of oxygen. [•] The resistivity values exhibited a decreasing tendency with partial pressure of oxygen. [•] The electrical properties of p-NiO films were enhanced by Ag doping. [ABSTRACT FROM AUTHOR]

Abstract: Nickel oxide thin films of various thicknesses were grown on glass substrates by dc reactive magnetron sputtering technique in a pure oxygen atmosphere with sputtering power of 150 W and substrate temperature of 523 K. Crystalline properties of NiO films as a function of film thickness were investigated using X-ray diffraction. XRD analysis revealed that (200) is the preferred orientation and the orientation of the films changed from (200) to (220) at film thickness of 350 nm. The maximum optical transmittance of 60% and band gap of 3.82 eV was observed at the film thickness of 350 nm. The lowest electrical resistivity of 5.1 Ω cm was observed at a film thickness of 350 nm, thereafter resistivity increases with film thickness. [Copyright &y& Elsevier]

Abstract: Nickel oxide (NiO) thin films were prepared on glass substrates at various bias voltages using dc reactive magnetron sputtering technique. The influence of substrate bias voltage on structural, optical and electrical properties was systematically investigated using X-ray diffraction (XRD), SEM, EDS, spectrophotometer and Hall effect studies. The NiO films are crystalline with preferential growth along (200) plane. The NiO films exhibit optical transmittance of 55% and direct band gap of 3.78eV at the substrate bias voltage of −75V. The electrical resistivity decreases as substrate bias voltage increases from 0 to −75V thereafter it was slightly increased. [ABSTRACT FROM AUTHOR]

Abstract: Thin films of cuprous oxide (Cu2O) were deposited on glass substrates at various bias voltages using DC reactive magnetron sputtering technique. The effects of substrate bias voltage on structural, electrical and optical properties were systematically analyzed. The crystallographic structure and orientation of the crystallites were strongly influenced by the bias voltage. [Copyright &y& Elsevier]