Integrated manufacturing of REciclable multi-material COmposites for the TRANSport sector
Solution?Processed Micro?Nanostructured Electron Transport Layer via Bubble?Assisted Assembly for Efficient Perovskite Photovoltaics
The unbalanced diffusion lengths of photogenerated electrons and holes in formamidine (FA)?based perovskite materials facilitate the charge recombination. Here, ordered SnO2 micro?nanoarrays are constructed by a bubble?assisted printing method and serve as “speedway” for electron transport in perovskite photovoltaics. Perovskite layers embedded with SnO2 arrays result in reduced charge recombination and improved power conversion efficiency in perovskite solar cells.Organic–inorganic halide perovskite solar cells (PSCs) have attracted significant attention in photovoltaic research, owing to their superior optoelectronic properties and cost?effective manufacturing techniques. However, the unbalanced charge carrier diffusion length in perovskite materials leads to the recombination of photogenerated electrons and holes. The inefficient charge carrier collecting process severely affects the power conversion efficiency (PCE) of the PSCs. Herein, a solution?processed SnO2 array electron transport layer with precisely tunable micro?nanostructures is fabricated via a bubble?template?assisted approach, serving as both electron transport layers and scaffolds for the perovskite layer. Due to the optimized electron transporting pathway and enlarged perovskite grain size, the PSCs achieve a PCE of 25.35% (25.07% certificated PCE).
» Publication Date: 27/09/2024
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement Nº 768737
