Passivation by pyridine-induced PbI(2) in methylammonium lead iodide perovskites

Defects at discontinuities of the perovskite lattice limit the performance of the perovskite solar cell (PSC). Lead iodide (PbI(2)) and pyridine have been shown to passivate these defects. We treat methylammonium lead iodide (MAPbI(3)) films with pyridine solutions to investigate the effects of the...

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Detalles Bibliográficos
Autores principales: Cook, Andre, Jones, Timothy W., Wang, Jacob Tse-Wei, Li, Hua, Atkin, Rob, Duffy, Noel W., Donne, Scott W., Wilson, Gregory J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9054832/
https://www.ncbi.nlm.nih.gov/pubmed/35517331
http://dx.doi.org/10.1039/d0ra04641h
Descripción
Sumario:Defects at discontinuities of the perovskite lattice limit the performance of the perovskite solar cell (PSC). Lead iodide (PbI(2)) and pyridine have been shown to passivate these defects. We treat methylammonium lead iodide (MAPbI(3)) films with pyridine solutions to investigate the effects of the two passivators. By comparing confocal fluorescence microscopy (CFM) images at 405 nm excitation and then at 559 nm excitation we demonstrate the pyridine treatment passivates and forms PbI(2) crystallites which cause additional passivation.

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