Optical and morphological properties of tetragonal Cu2ZnSnS4 thin films grown from sulphide precursors at lower temperatures - I. S. Babichuk; V. O. Yukhymchuk; M. O. Semenenko; N. I. Klyui; R. Caballero; O. M. Hreshchuk; I. S. Lemishko; I. V. Babichuk; V. O. Ganus; M. Leon (Semiconductor Physics, Quantum Electronics and Optoelectronics, 2014)