“Effect of Thickness on Structural, Morphological, and Optical Properties of Copper (Cu) Doped Zinc Selenide (ZnSe) Thin Films by Vacuum Evaporation Method”, J Bangladesh Acad Sci, vol. 43, no. 2, pp. 159–168, Mar. 2020, doi: 10.3329/jbas.v43i2.45737.