ACS Appl Mater Interfaces
December 2023
Cation incorporation emerges as a promising approach for improving the performance of the kesterite CuZnSn(S,Se) (CZTSSe) device. Herein, we report indium (In) doping using the chemical bath deposition (CBD) technique to enhance the optoelectronic properties of CZTSSe thin-film solar cells (TFSCs). To incorporate a small amount of the In element into the CZTSSe absorber thin films, an ultrathin (<10 nm) layer of InS is deposited on soft-annealed precursor (Zn-Sn-Cu) thin films prior to the sulfo-selenization process.
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