Conduction Mechanism and Photo-Electochemical Performance of Copper Iodide Hole Transport Material-Based Perovskite Solar Cell

Perovskite solar cells have garnered the attention of researchers in recent years as they have been able to attain high efficiency within a short time. In the present study, the hybrid organic inorganic lead iodide perovskite has been used as the sensitizer. Successful fabrication of a hybrid lead halide perovskite sensitized solar cell (PSC) with copper iodide as a medium for transporting holes (HTM) has been performed in a sandwich structure. The synthesized CH3NH3PbI3 material and HTM have undergone various characterization processes, such as XRD, UV-Vis, SEM, and EDX. The present work is based on the synthesis of perovskite, HTM, and polymer electrolyte and their application in a PSC at room ambient following the sand-wich structure. A planar WE/TiO2/CH3NH(3)PbI(3)/HTM/electrolyte/CE structure was fabricated through solution-processed spin-coating. The electrical properties of the PSC were measured through a solar simulator, and it attained an efficiency of 13.64%, with Voc = 0.63 V and J(sc) = 33 (mA)/(cm)2 with fill factor = 0.65. This work shows the sandwich-structured fabrication of the PSC in ambient condition with a considerably good efficiency which represents the novelty of the work.

Automated summary

This study focuses on the fabrication of a hybrid lead halide perovskite sensitized solar cell (PSC) with copper iodide as a medium for transporting holes (HTM) in a sandwich structure. The synthesized CH3NH3PbI3 material and HTM were characterized through various processes. A planar structure was fabricated and the PSC showed an efficiency of 13.64% with good electrical properties. The novelty of this work lies in the successful fabrication of the sandwich-structured PSC with considerable efficiency in ambient conditions.