S-Rich CdS1−yTey Thin Films Produced by the Spray Pyrolysis Technique

Abstract

Understanding the properties of CdSTe ternary alloys is important because they always form at the interface between the CdS window layer and CdTe absorber layer in CdS/CdTe solar cells due to the intermixing. This interdiffusion is necessary because it improves the device performance. Experimental work has been devoted to studying Te rich p-type CdSxTe1−x alloys, but there is a lack of studies on S-rich n-type CdS1−yTey solid solutions. In this work, a review of the structure, morphology, and optical properties of the S-rich n-type CdS1−yTey thin films produced by the spray pyrolysis technique on glass substrates is presented.

Keywords

• CdS/CdTe solar cells
• CdSxTe1−x solid solution
• interdiffusion
• spray pyrolysis
• photoluminescence