CBD‐Cd1−xZnxS thin films and their application in CdTe solar cells

Composition, optical properties, structure properties, and surface morphology of thin films of Cd1−xZnxS (x ≤ 10%) prepared by chemical bath deposition (CBD) are reported. The best cell efficiency was 15.7%. It used a Cd1−xZnxS window layer, was confirmed by NREL (Voc = 840.1 mV, Jsc = 24.81 mA/cm2, and FF = 75.55%), and had a CTO/ZTO/Cd0.92Zn0.08S/CdTe cell structure. The use of low zinc concentration in the Cd1−xZnxS layer and interdiffusion between Cd1−xZnxS and CdTe layers were assumed to be the reasons for maintaining high Voc and FF. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)