Inverted perovskite solar cell based on ionic salt achieves 26% efficiency

The U.S. National Renewable Energy Laboratory (NREL) has led a global team that utilized ionic salt in the electron transport layer of a perovskite solar cell to boost the device’s stability and effectiveness. Trials revealed a 26% power conversion efficiency, with only a 2% decline after 2,100 hours of operation under 1-sun conditions at 65 degrees Celsius.