Matches in SemOpenAlex for { <https://semopenalex.org/work/W3172882011> ?p ?o ?g. }
- W3172882011 abstract "Abstract Formamidinium lead iodide perovskites are promising light-harvesting materials, yet stabilizing them under operating conditions without compromising optimal optoelectronic properties remains challenging. We report a multimodal host–guest complexation strategy to overcome this challenge using a crown ether, dibenzo-21-crown-7, which acts as a vehicle that assembles at the interface and delivers Cs + ions into the interior while modulating the material. This provides a local gradient of doping at the nanoscale that assists in photoinduced charge separation while passivating surface and bulk defects, stabilizing the perovskite phase through a synergistic effect of the host, guest, and host–guest complex. The resulting solar cells show power conversion efficiencies exceeding 24% and enhanced operational stability, maintaining over 95% of their performance without encapsulation for 500 h under continuous operation. Moreover, the host contributes to binding lead ions, reducing their environmental impact. This supramolecular strategy illustrates the broad implications of host–guest chemistry in photovoltaics." @default.
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- W3172882011 date "2021-06-07" @default.
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- W3172882011 title "Multimodal host–guest complexation for efficient and stable perovskite photovoltaics" @default.
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- W3172882011 doi "https://doi.org/10.1038/s41467-021-23566-2" @default.
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