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Efficient Wide-Bandgap Mixed-Cation and Mixed-Halide Perovskite Solar Cells by Vacuum Deposition

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Efficient Wide-Bandgap Mixed-Cation and Mixed-Halide Perovskite Solar Cells by Vacuum Deposition

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dc.contributor.author	Gil Escrig, Lidón
dc.contributor.author	Dreessen, Chris
dc.contributor.author	Palazón Huet, Francisco
dc.contributor.author	Hawash, Zafer
dc.contributor.author	Moons, Ellen
dc.contributor.author	Albrecht, Steve
dc.contributor.author	Sessolo, Michele
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2021-02-23T14:16:07Z
dc.date.available	2021-02-23T14:16:07Z
dc.date.issued	2021
dc.identifier.citation	Gil Escrig, Lidón Dreessen, Chris Palazón Huet, Francisco Hawash, Zafer Moons, Ellen Albrecht, Steve Sessolo, Michele Bolink, Henk 2021 Efficient Wide-Bandgap Mixed-Cation and Mixed-Halide Perovskite Solar Cells by Vacuum Deposition Acs Energy Letters 6 2 827 836
dc.identifier.uri	https://hdl.handle.net/10550/78087
dc.description.abstract	Vacuum deposition methods are increasingly applied to the preparation of perovskite films and devices, in view of the possibility to prepare multilayer structures at low temperatures. Vacuum-deposited, wide-bandgap solar cells based on mixed cation and mixed anion perovskites have been scarcely reported, due to the challenges associated with the multiple-sources processing of perovskite thin-films. In this work, we describe a 4-sources vacuum deposition process to prepare wide-bandgap perovskites of the type FA1-nCsnPb(I1-xBrx)3 with tunable bandgap and controlled morphology, using FAI, CsI, PbI2 and PbBr2 as the precursors. The simultaneous sublimation of PbI2 and PbBr2 allows to decouple and control the relative Br/Cs content, resulting in homogeneous perovskite films with bandgap in the 1.7 eV-1.8 eV range and no detectable halide segregation. Solar cells based on 1.75 eV bandgap perovskites show efficiency up to 16.8% and promising stability, maintaining 90% of the initial efficiency after 2 weeks of operation.
dc.language.iso	eng
dc.relation.ispartof	Acs Energy Letters, 2021, vol. 6, num. 2, p. 827-836
dc.subject	Cèl·lules fotoelèctriques
dc.subject	Conductivitat elèctrica
dc.title	Efficient Wide-Bandgap Mixed-Cation and Mixed-Halide Perovskite Solar Cells by Vacuum Deposition
dc.type	journal article	es_ES
dc.date.updated	2021-02-23T14:16:07Z
dc.identifier.doi	10.1021/acsenergylett.0c02445
dc.identifier.idgrec	143315
dc.rights.accessRights	open access	es_ES