Degradation Assessment for Prototypal Perovskite Photovoltaic Modules in Long Term Outdoor Experimental Campaign

In the future, PhotoVoltaic (PV) modules might overcome the current efficiencies by including crystalline silicon layers and layers of different materials, with different absorption properties. One of the most promising materials to reach this goal is the perovskite, an organic material capable to absorb radiation with wavelength between ~ 300 nm and ~ 800 nm. However, the major issue of such a material is its stability over time, as well as the stability of the electrical performance of Perovskite Solar Cells (PSCs). This work investigates the degradation of the electrical performance at Standard Test Conditions (STC) of 4 PSCs using data collected in an experimental campaign carried out in 2022 at Torino (Italy). Since these modules were prototypes, their electrical performance at STC was determined in the first day of the campaign. In addition, the degradation of maximum power and efficiency over time was investigated. Finally, the temperature coefficients for power were estimated in the first day of the campaign.