“…The advantages of using ZnSe over CdS include its non-toxicity, its wider energy band gap than CdS, and its ability to provide a better lattice matching with CIGS absorber layer. ZnSe film has been prepared by various growth techniques, such as molecular beam epitaxy (MBE) [6], metalorganic chemical vapour deposition (MOCVD) [7], atomic layer epitaxy (ALE) [8], electro-deposition [9], chemical bath deposition [10], photochemical [11], spray pyrolysis [12], and thermal evaporation [13]. In addition, advances in low temperature epitaxial growth techniques such as MBE and MOCVD have been used to obtain high quality II-VI compound semiconductor films.…”