Large guanidinium cation mixed with methylammonium in lead iodide perovskites for 19% efficient solar cells
Year: 2017
Type: article
Abstract: Organic–inorganic lead halide perovskites have shown photovoltaic performances above 20% in a range of solar cell architectures while offering simple and low-cost processability. Despite the multiple ionic compositions that have been reported so far, the presence of organic constituents is an essential element in all of the high-efficiency formulations, with the methylammonium and formamidinium cations being the sole efficient options available to date. In this study, we demonstrate improved material stability after the incorporation of a large organic cation, guanidinium, into the MAPbI 3 crystal structure, which delivers average power conversion efficiencies over 19%, and stabilized performance for 1,000 h under continuous light illumination, a fundamental step within the perovskite field.
Source: Nature Energy
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $12,690
Awards: G1046364318, G1176565477, G1427426516, G1535130713, G166610987, G2153309609, G2163975405, G2445369504, Engineering HYbrid multidimensional interfaces for high efficient and stable PERovskite solar cells HYPER, G3844536092, G4034572470, G4937468798, G5363326558, G7195231746, Solution Processed OLEDs for Lighting, Experienced Researchers Incoming Fellowship Programme at the Ecole Polytechnique Fédérale de Lausanne, G8847734141
OpenAlex ID: W2771319237