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Vacuum-Deposited 2D/3D Perovskite Heterojunctions

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Vacuum-Deposited 2D/3D Perovskite Heterojunctions

dc.contributor.author	La Placa, Maria-Grazia
dc.contributor.author	Gil Escrig, Lidón
dc.contributor.author	Guo, Dengyang
dc.contributor.author	Palazón Huet, Francisco
dc.contributor.author	Savenije, Tom J.
dc.contributor.author	Sessolo, Michele
dc.contributor.author	Bolink, Henk
dc.date.accessioned	2020-06-17T09:00:06Z
dc.date.available	2020-11-05T05:45:06Z
dc.date.issued	2019
dc.identifier.citation	La Placa, Maria-Grazia Gil Escrig, Lidón Guo, Dengyang Palazón Huet, Francisco Savenije, Tom J. Sessolo, Michele Bolink, Henk 2019 Vacuum-Deposited 2D/3D Perovskite Heterojunctions Acs Energy Letters 4 12 2893 2901
dc.identifier.uri	https://hdl.handle.net/10550/75090
dc.description.abstract	Low-dimensional (quasi-) 2D perovskites are being extensively studied in order to enhance the stability and the open-circuit voltage of perovskite solar cells. Up to now, thin 2D perovskite layers on the surface and/or at the grain boundaries of 3D perovskites have been deposited solely by solution processing, leading to unavoidable intermixing between the two phases. In this work, we report the fabrication of 2D/3D/2D perovskite heterostructures by dual-source vacuum deposition, with the aim of studying the interaction between the 3D and 2D phases as well as the charge transport properties of 2D perovskites in neat 2D/3D interfaces. Unlike what is normally observed in solution-processed 3D/2D systems, we found a reduced charge transport with no direct evidence of surface passivation, in spite of larger open-circuit voltage. This is likely due to a nonfavorable orientation of the 2D perovskite with respect to methylammonium lead iodide and to the formation of 2D phases with very low dimensionality (pure 2D).
dc.language.iso	eng
dc.relation.ispartof	Acs Energy Letters, 2019, vol. 4, num. 12, p. 2893-2901
dc.subject	Materials
dc.subject	Semiconductors
dc.title	Vacuum-Deposited 2D/3D Perovskite Heterojunctions
dc.type	journal article	es_ES
dc.date.updated	2020-06-17T09:02:28Z
dc.identifier.doi	10.1021/acsenergylett.9b02224
dc.identifier.idgrec	135539
dc.embargo.terms	1 year
dc.rights.accessRights	open access	es_ES