A Versatile Solution Route to Efficient Cu2ZnSn(S,Se)(4) Thin-Film Solar Cells

作者：Zhang Ruihong; Szczepaniak Stephen M; Carter Nathaniel J; Handwerker Carol A; Agrawal Rakesh^*

来源：Chemistry of Materials, 2015, 27(6): 2114-2120.

DOI：10.1021/cm504654t

A simple solution-based approach for the deposition of Cu2ZnSn(S,Se)(4) using an amine thiol mixture is presented. The versatility of this solvent mixture in dissolving different cation sources and chalcogens opens the door for a variety of metal chalcogenide molecular precursor designs. The process involves incorporating the metal sources and chalcogens into an amine thiol solvent mixture at room temperature, spin coating a precursor film, and heat-treating precursor films in both an inert gas and selenium atmosphere. With this solution approach, high-quality kesterite CZTS and CZTSSe thin films were formed after low-temperature annealing and selenization. Solar cells were fabricated based on these CZTSSe thin films, resulting in a total area power conversion efficiency of 7.86% for a cell area of 0.47 cm(2) under standard AM 1.5 illumination.

• 出版日期2015-3-24