Performance prediction of perovskite solar cell integrated with lead-free cesium platinum Iodide (Cs2PtI6) absorber and CuInS2 quantum Dot as HTL

Lead-containing perovskite solar cells present significant obstacles to achieving widespread commercial implementation of problems related to their toxicity and stability. Hence, it is critical to contemplate Pt-based all-IPSC as indispensable for rapidly spreading high-performing PSCs. These last several years have witnessed a growing interest in PSCs employing all-inorganic perovskite absorbers, which have garnered plenty of attention arising from their low bandgap and broad high absorption. In this study, we comprehensively investigate a PSC based on Cs2PtI6 using SCAPS. We offer a hypothetical assessment of a Cs2PtI6-based n-i-p organized heterojunction PSC, which is well disposed of and stable without a lead because it utilizes all-inorganic charge-transporting elements. By carefully balancing the thickness of charge transport materials, absorber thickness, defective absorber density, the interface's defect density, series resistance, and shunt resistance, we have achieved a performance-driven PSC with an efficiency of up to 32.77 % at room temperature. Based on our findings, Cs2PtI6 displays excellent potential as an absorbing perovskite for advancing lower poisonous IPSC technology.