Thickness study of Al:ZnO film for application as a window layer in Cu(In1−xGax)Se2 thin film solar cell

▶ Structural, electrical and optical properties of various Al:ZnO thin film were studied. ▶ Electrical and structural properties of Al:ZnO film improved with increasing its thickness, ▶ The optical properties of Al:ZnO film degraded with thickness. ▶ Jsc of the CIGS solar cell was influenced by Al:ZnO layer thickness. ▶ Electrically and optically optimized Al:ZnO window give best efficiency solar cell.