Studies of Cu-doped ZnS thin films prepared by sputtering technique

Abstract

Radio frequency magnetron sputtering technique has been used to deposit Cu‐doped ZnS thin films on glass and n‐type Si(100) substrates at room temperature. Crystalline structure, surface morphology, and elemental oxidation states have been studied by X‐ray diffraction, field emission scanning electron microscopy, atomic force microscopy, and X‐ray photoelectron spectroscopy. Ultraviolet–visible spectroscopy has been employed to measure the transmittance, reflectance, and absorbance properties of coated films. The deposited thin films crystallize in zinc blende or sphalerite phases as proved by X‐ray diffraction analysis. The intensity of diffraction peaks decreases with increasing the dopant concentrations. The predominant diffraction peak related to (111) plane of ZnS is observed at 28.52° along with other peaks. The peak positions are shifted to higher angles with an increase of Cu concentrations. X‐ray photoelectron spectroscopy studies show that Cu is present in +1 oxidation state. Transmittance, reflectance, and absorbance properties of the deposited films have a slight variation with dopant concentrations. Copyright © 2016 John Wiley & Sons, Ltd.

Effect of Deposition Temperature on the Properties of Copper-Zinc Sulphide Thin Films using Mixed Copper and Zinc Dithiocarbamate Precursors

“…However, the intensity of the peaks was found to be gradually decreasing with an increase in deposition temperature, which indicates a progressive transformation of the CZS oriented polycrystalline phase to a distinct ZnS phase. This shows a separation from the deposited CZS thin films to ZnS with increasing deposition temperature [16][17][18][19][20]. Increasing the deposition temperature from 400 to 430 ᴼC reveals that the deposited material suddenly changes to polycrystalline ZnO (JCPDS 36-1451) with different peaks orientation.…”

Fe-doped ZnS film fabricated by electron beam evaporation and its application as saturable absorber for Er:ZBLAN fiber laser*

“…Within a certain range of doping concentration, the similar trend has been reported in Refs. [26,27]. This kind of relatively flat surface of the deposited films will not cause too much scattering loss.…”

Preparation and analysis of Ag2Se1-xTex thin film structure on the physical properties at various temperatures by thermal evaporation

“…[10]. To make ZnS thin films, microwave-assisted [11], hydrothermal [12], MBE, PLD [13,14] CBD [15], sputtering [16], and CSP [17][18][19][20] have all been used. CSP has received a lot of attention as a technology because of its capacity to deposit over a large region, low cost, and ambient operating environment.…”