Investigation of Laser Grooving Process on Copper Tin Sulfite Thin Films

Abstract

Spray pyrolysis deposition has been successfully applied to fabricate CTS thin films onto glass substrates that maintained at 300°C, via the homemade fully computerized system. A mixture aqueous solution of thiourea and dihydrate chloride of Sn (II) and Cu (II) were used for the spraying process. Structural, optical, and morphological properties of CTS films were examined. XRD endorses a monoclinic crystallinity. XRD pattern has diffraction peaks at 2θ = 28.39°, 33.02°, 47.34° and 56.39°, respectively. The FTIR examination certified the vibration mode of Cu-S and Sn-S bonds. The crystallite size was noted about 78 nm, where measured by debye-Scherrer’s formula. Both absorption and transmission spectra were recorded in the wavelength range of 300-800 nm. The surface morphology of the fabricated CTS films exposed a uniform coating on the substrate with an applicable distribution. Laser grooving process was applied to grove the fabricated film. The groove width was found about 37 μm, etched via 500 mW blue laser source.