Cu2ZnSnS4 (CZTS) solar cell with superstrate structure of fluorine-doped tin oxide glass/TiO2/In2S3/CZTS/Carbon was prepared entirely by non-vacuum processes. The compact TiO2 window and In2S3 buffer layers, CZTS absorber layer and Carbon electrode layer were prepared by spray pyrolysis method, ball milling and screen printing combination processes and screen printing process, respectively. The short-circuit current density, open-circuit voltage, fill factor and conversion efficiency of the best fabricated solar cell are 8.76 mA/cm(2), 250 mV, 0.27 and 0.6%, respectively. The fabrication process for the CZTS solar cell did not employ any vacuum conditions or high-toxic materials (such as CdS, H2Se, H2S or Se). (C) 2012 Elsevier B. V. All rights reserved.