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

Autor: Cook A; University of Newcastle Callaghan NSW 2308 Australia.; CSIRO Energy Centre Mayfield West NSW 2304 Australia Gregory.Wilson@csiro.au., Jones TW; CSIRO Energy Centre Mayfield West NSW 2304 Australia Gregory.Wilson@csiro.au., Wang JT; CSIRO Energy Centre Mayfield West NSW 2304 Australia Gregory.Wilson@csiro.au., Li H; School of Molecular Sciences, The University of Western Australia WA 6009 Australia., Atkin R; School of Molecular Sciences, The University of Western Australia WA 6009 Australia., Duffy NW; CSIRO Energy Clayton Laboratories Clayton Vic 3169 Australia., Donne SW; University of Newcastle Callaghan NSW 2308 Australia., Wilson GJ; CSIRO Energy Centre Mayfield West NSW 2304 Australia Gregory.Wilson@csiro.au.
Jazyk: angličtina
Zdroj: RSC advances [RSC Adv] 2020 Jun 23; Vol. 10 (40), pp. 23829-23833. Date of Electronic Publication: 2020 Jun 23 (Print Publication: 2020).
DOI: 10.1039/d0ra04641h
Abstrakt: 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.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
Databáze: MEDLINE
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