Highly transparent and resistive nanocrystalline ZnO-SnO₂films prepared by rf magnetron sputtering

Abstract

-ZnO-SnO 2 films were deposited by rf magnetron sputtering using a ZnO-SnO 2 (2:1 molar ratio) target. The target was made from a mixture of ZnO and SnO 2 powders calcined at 800°C. The working pressure was 1 mTorr, and the rf power was 120 W. The ratio of oxygen to argon (O 2 :Ar) was varied from 0% to 10%, and the substrate temperature was varied from 27°C to 300°C. The crystallographic properties and the surface morphologies of the films were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic force spectroscopy (AFM). The ZnO-SnO 2 films deposited in O 2 :Ar = 10% exhibited resistivity higher than 10 6 Ωcm and transmittance of more than 80% in the visible range.

Characterization of green synthesized nano-formulation (ZnO–A. vera) and their antibacterial activity against pathogens

“…Similar observation has been reported on the green synthesis of stable silver, zinc and copper oxide nanoparticles using different plant precursor (Kumara Swamy et al, 2014; Page 9 of 30 A c c e p t e d M a n u s c r i p t 9 Saware and Venkataraman, 2014). Previous works also have established that semiconducting nanoparticles exhibit dissimilarity in their electronic properties relative to the bulk counterpart (Cha et al, 2012), which was clearly observed in this study. Fig.…”

“…where α is the optical absorption coefficient, hν is the photon energy, E g is the direct band gap, and E is a constant (Cha et al, 2012). Plotting (αhν) 2 as a function of photon energy and extrapolating the linear portion of the curve to zero absorption (Fig.…”

Effects of an Aluminum Contact on the Carrier Mobility and Threshold Voltage of Zinc Tin Oxide Transparent Thin Film Transistors

“…The zinc tin oxide (ZTO) film was thought to be an effective active layer for TTFTs because of its wide energy band gap and high resistivity [12][13][14]. We have reported that ZTO TTFTs employing In as source/drain electrodes exhibit a mobility greater than 18.0 cm 2 /Vs [15].…”