Optical and Electrical Properties of NiO Thin Films Deposited by DC Sputtering Technique


Keywords:
Nickel oxide, Thin Film, Direct current sputtering, Electrical properties, Optical propertiesAbstract
In this study, Nickel Oxide (NiO) thin films were deposited on silicon and glass substrates with different thicknesses by parameter optimization using the direct current (DC) sputtering technique. The deposited NiO thin films were annealed for 30 min at different temperatures ranging from 30C to 330C. After annealing, the optical and electrical properties of NiO thin films were examined. Characterizations were mainly carried out by ultraviolet–visible (UV/Vis) Spectrometer and four-point probe (FPP) measurements. The minimum surface reflectance of 50 nm NiO film coated silicon substrate, annealed at 135C for 30 min was 2.0% (at 550 nm) and the average surface reflectance was measured as 10.21% on the sample with 20 nm NiO thin film on the surface, annealed at 30C. In case of FFP measurements, the minimum resistivity was measured as 0.01 ohmm when the thickness of NiO was 10 nm and annealed at 30C. The maximum resistivity was observed as 4.19 ohmm on the 70 nm of NiO coated glass and annealed at 330C for 30 min.
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