Remarkable performance optimization of inverted p-i-n architecture perovskite solar cell with CZTS as hole transport material

Hole transport material (HTM) is a major component of perovskite solar cells (PSCs). PEDOT: PSS, an organic HTM, widely used in inverted (p-i-n) PSCs. While PSS unstable, expensive and it's acidic nature could deteriorate the absorber. Copper zinc tin sulphide (CZTS), inorganic semiconductor can be as HTM due to its properties such low cost, ease synthesis high hole mobility. In this work, device simulation PSC was performed with CZTS exploit maximum capability. Remarkable power conversion efficiency (PCE) 25.43% achieved after optimizing performance. Device performance strongly affected by thickness electron affinity well diffusion length carriers. PCE real fabricated also found 9.72%. This work demonstrates promising candidate replace from both experimental theoretical perspectives.