“…Perovskite Solar Cells (PSCs) have gained much research consideration in modern eras as a result of their improved efficiencies, low processing temperatures and cost of fabrications. Many researches have been carried out on PSCs led to improved energy power conversion efficiencies (PCEs) from 3.8 % in 2009 to over 25 % after a decade [ 12 ]. Regular mesoporous structure, regular planar structure, and inverted planar structure are all possible configurations for perovskite solar cells as shown in Fig.…”