The rise and potential of top interface modification in tin halide perovskite solar cells

Abstract

Top interface engineering is becoming one of the preferred methodologies for easily improving tin halide perovskite solar cell efficiency. The particular effectiveness of this strategy for tin-based materials may stem from their fragility in terms of oxidation and defect chemistry. Studies mainly focus on the design of novel fullerenes as interlayers or electron-selective layers, as well as on the application of organic and inorganic molecules of varying sizes. In this mini-review, we highlight the rise and potential of top interface modification in tin halide perovskite solar cells.