Large-grained Cu2ZnSnS4 layers sintered from Sn-rich solution-deposited precu…

Cu2ZnSnS4 (CZTS) layers are deposited by a direct solution coating of metal salts dissolved in dimethyl sulfoxide (DMSO)and thiourea as sulphur source. An intentional Sn-rich precursor is used and the influence of reactive and inert atmosphere on the layer morphology is investigated during high temperature sintering. Larger grain growth is observed when annealing the precursor in inert N2 atmos…