A water- and sulfurization-free solution route to Cu2-xZn1+xSnS4

作者：D' Angelo Renato; Ricardo Cristy Leonor Azanza; Mittiga Alberto; Scardi Paolo; Leoni Matteo^*

来源：Journal of Sol-Gel Science and Technology, 2014, 72(3): 490-495.

DOI：10.1007/s10971-014-3462-x

• CZTS
• Non-vacuum
• Dip-coating method
• Sol-gel
• Kesterite

Zinc-rich/copper-poor Cu2-xZn1+xSnS4 (x = 0.2, CZTS) has been successfully produced in film and powder form using two non-aqueous solutions (of metal salts and thiourea) without the need for sulfurization during the annealing phase. A reaction route is proposed and the choices of the solvents (water, ethyleneglycol, ethanol, methanol) and of the tin source (tin chloride pentahydrate or anhydrous) discussed and justified. A pure and coarse-grained material is obtained with a mix of metal salts in methanol and thiourea in ethylene glycol. The tin pentahydrate salt seems a better alternative to the commonly used anhydrous chloride.

• 出版日期2014-12