Beginner’s Guide to Visual Analysis of Perovskite Solar Cell Current-Voltage Characteristics

The current-voltage characteristic (JV) is a critical tool for understanding the behavior of solar cells. In this presentation, I will provide an overview of the critical aspects of JV analysis and introduce a user-friendly flowchart that facilitates the swift identification of the most probable limiting process in perovskite solar cells, based mainly on the outcomes of light-intensity-dependent JV measurements.<br/>The flowchart was developed through extensive drift-diffusion simulations and a rigorous literature review, with a specific focus on perovskite solar cells (it is also applicable for organic solar cells with minor adjustments). Hereby, each loss mechanism is supported by a drift-diffusion simulation showing the exact influence on the main JV parameters, namely short-circuit current, open-circuit voltage, and fill factor. The flowchart also suggests an additional experiment besides JV characteristics to get a more accurate and definitive prediction of the main losses.<br/>It is therefore a valuable starting point for the analysis of experimental data and provides guidance to quantify the main loss processes of perovskite solar cells.