CZTS/CdS: interface properties and band alignment study towards photovoltaic applications

Thin films of CZTS and CdS have been synthesized at optimized process parameters using radio frequency sputtering. These films were characterized using the variety of techniques for their structural, morphology, electric transport, and optical properties. Low angle-XRD and Raman spectroscopy analysis revealed the formation of a single phase of kesterite-CZTS and highly pure hexagonal CdS films. The HR-TEM analysis shows that both CZTS and CdS...