Optimizing Cs2TiBr6-Based PSCs with Graphene Quantum Dots

The overall efficiency and optimization of perovskite solar cells are significantly influenced by the selective layers in the cells. In this study, particular emphasis is placed on a perovskite solar cell architecture in which the charge transport layer has been removed from the structure intentionally. In this paper, the full fabrication procedure is given free from the charge transport layer. To understand the behavior of the perovskite material, XRD analysis and TEM analysis, along with photoluminescence measurements, were conducted. These measurements provided valuable insights into the efficiency of the perovskite material. Additionally, SEM analysis was employed to characterize the surface morphology of the proposed structure. Furthermore, the photovoltaic performance of the proposed solar cell architectures was evaluated. With the addition of graphene quantum dots in the perovskite solar cell’s structure, we achieved an impressive 1.02% efficiency. These results show that, with a simple manufacturing procedure, removing the charge transport layer would have the greatest influence on photovoltaic performance. Overall, this research is helpful in understanding how cesium titanium bromide functions as an absorber in perovskite solar cells.