Analysis of the degradation of highefficiency encapsulated PM6:Y7based Photovoltaic Cells

In this work, we report a degradation study of high -efficiency conventional polymer solar cells (PSCs). The high performance of the PM6:Y7-based device is achieved with a power conversion efficiency (PCE) of up to 15.64% in the first measurement. The article describes the results of the measurements and analysis of the degradation process. The electrical parameters during the degradation process were extracted from the current density - voltage characteristics curves (J-V) under light and dark conditions. Were observed the specific parameters of the selected cells: open -circuit voltage (V OC ), short circuit current density (J SC ), fill factor (FF), PCE, series (R S ), and shunt (R SH ) resistance values The PCE of the device decreased down to 64% of the initial PCE after 1056 h.