“Fabrication of Cu2ZnSnS4 (CZTS) thin films by ultrasonic spray pyrolysis at a low substrate temperature and effect of tin concentration on the characteristics of the CZTS thin films”, Bangladesh J. Sci. Ind. Res., vol. 57, no. 1, pp. 1–6, Mar. 2022, doi: 10.3329/bjsir.v57i1.58894.