Characterization and analysis of FAxCs(1−x) Pb(IyBr(1−y))3 perovskite solar cells with thickness controlled transport layers for performance optimization

Strong characterization methods are needed to fully comprehend the chemistry and composition of perovskite solar cells. Understanding the interaction between layers inside a cell and how they react with the environment is important to achieve optimum manufacturing processes, and improve efficiency of perovskite solar cells. Here, we probe a hybrid organic-inorganic perovskite cell structure formed by a fluorine-doped tin oxide (FTO), cassiterite (SnO2), mixed halide perovskite, Spiro-OMeTAD and silver layers. We have demonstrated a power conversion efficiency (PCE) greater than 19% and aVoc of more than 1.1 V for a wide-band gap (1.6 eV) perovskite solar cell.