Ionic liquid based dye-sensitized solar cells (DSSCs) were exposed to outdoor irradiance for seven months (906 kWh/m2) on faculty’s roof in Ljubljana at short circuit, open circuit, and quasi maximum power point regime. During the ageing we also kept the reference DSSCs in the dark at room temperature under open circuit regime. The performance of DSSCs was evaluated indoor at standard test conditions before ageing, two times during the ageing and after aging. Additionally, the electroluminescence and transmittance imaging were used to follow the evolution of local defects upon ageing. The results revealed that operating regime has a strong influence on the ageing of the DSSCs. The performance of DSSCs remained remarkably stable with an exception of the cells aged under short circuit regime which caused a significant decrease in JSC mainly due to a decrease of tri-iodide concentration in the electrolyte.
COBISS.SI-ID: 9544788