The influence of the precursor concentration on CuSbS2 thin films deposited from aqueous solutions

The paper discusses the influence of precursor concentration on the morphology and the structure of CuSbS2 thin films obtained from aqueous solutions and used as absorber for three-dimensional (3D) solar cells. CuSbS2 films are obtained by Spray Pyrolysis Deposition, varying the precursor weight ratio (CuCl2·2H2O: H2NCSNH2: (CH3COO)3Sb) between 2.57: 1: 5.71–6.86: 1: 5.71, at 240 °C. The films were analyzed by XRD, I–V dark measurements and SEM. Enriching the films in antimony proved to be a control method of the films morphology and structure.