Aqueous-Solution-Processed Cu₂ZnSn(S,Se)₄ Thin-Film Solar Cells via an Improved Successive Ion-Layer-Adsorption-Reaction Sequence.

ABSTRACT: A facile improved successive ionic-layer adsorption and reaction (SILAR) sequence is described for the fabrication of Cu₂ZnSn(S,Se)₄ (CZTSSe) thin-film solar cells (TFSCs) via the selenization of a precursor film. The precursor films were fabricated using a modified SILAR sequence to overcome compositional inhomogeneity due to different adsorptivities of the cations (Cu⁺, Sn⁴⁺, and Zn²⁺) in a single cationic bath. Rapid thermal annealing of the precursor films under S and Se vapor atmospheres led to the formation of carbon-free Cu₂ZnSnS₄ (CZTS) and CZTSSe absorber layers, respectively, with single large-grained layers. The best devices based on CZTS and CZTSSe absorber layers showed total area (∼0.30 cm²

SUBMITTER: Suryawanshi MP 

PROVIDER: S-EPMC6645655 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature