Solar cells of hybrid organic-inorganic perovskite have attracted researchers and scientists all over the world. Perovskite solar cells outperform conventional silicon solar cells by achieving higher conversion efficiency with a more stable performance. In this paper, a typical perovskite solar cell consists of 6 principal layers of materials: a protective glass layer, thin fluorine Doped Tin Oxide (FTO), Cd_(0.5) Zn_(0.5)S as electron transportation layer (ETM), MASnl_3 as perovskite active layer, CuSCN as hole transportation layer (HTM) and another gold (Au) electrode were utilized. This paper summarizes the work that centred on the selective use of composite materials of the perovskite solar cell with a variation of the perovskite layer thickness. An optimization procedure is applied to increase the conversion efficiency and enhance the overall performance by varying the thickness and doping concentration of the main cell layers (i.e. ETM, absorber and HTM). The results showed that, by employing the optimum parameters, the conversion efficiency was increased from 12.86 to 26.68.
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