Strategies for Efficient Inverted Architecture Devices

Despite remarkable progress, the performance of lead halide perovskite solar cells fabricated in an inverted structure lags behind that of standard architecture devices. In this talk, I will present several strategies for increasing the performance of inverted architecture devices. First, I will describe a general approach to the fabrication of efficient perovskite solar cells from any antisolvent. Next, I will show that the performance of inverted architecture solar cells can be enhanced by modifying the method of antisolvent deposition. Finally, I will present a novel strategy for modifying both the bottom and top interfaces in inverted architecture perovskite solar cells that leads to a simultaneous enhancement in all the photovoltaic parameters. Using this strategy results in a champion device with an efficiency of 23.7%.