“…The other peaks found at 2θ ≈ 18.3°, 23.2°, 33.1°, 37°, 37.9°, 44.95°, 51.05°, 58.85°, 69.1°, 78.7° are associated with the (101), ( 110 The highest-intensity peak at 2θ ≈ 28.55° can correspond to the (112) plane of the tetragonal structure of kesterite CZTS, as well as the tetragonal structure of Cu 2 SnS 3 , cubic or hexagonal structure of ZnS, CuS, and Sn 2 S 3 . The peak at 2θ ≈ 47.45° can belong to the (220) CZTS plane and to the Cu 2 SnS 3 tetragonal structure or cubic structure of ZnS [23][24][25][26]. Since most of the lines belong to the tetragonal kesterite structure CZTS, it can be concluded that the films crystallize in this structure.…”