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

An international team led by the U. S. National Renewable Energy Laboratory (NREL) has used ionic salt for the electron transport layer of a perovskite solar cell to improve device stability and performance. Test results showed a 26% power conversion efficiency with 2% degradation after 2,100 hours of 1-sun operation at 65 C. An international team led by the U. S. Department of Energy's National Renewable Energy Laboratory (NREL) has applied a new ionic salt at the electron transport layer (ETL) interface in inverted perovskite solar cells to overcome weaknesses in commonly used optimized buckminsterfullerene ...

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