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Polarization Switching and Light-Enhanced Piezoelectricity in Lead Halide Perovskites
dc.contributor.author | Coll, Mariona | |
dc.contributor.author | Gómez, Andrés | |
dc.contributor.author | Mas, Elena | |
dc.contributor.author | Almora Rodríguez, Osbel | |
dc.contributor.author | Garcia-Belmonte, Germà | |
dc.contributor.author | Campoy-Quiles, Mariano | |
dc.contributor.author | Bisquert, Juan | |
dc.date.accessioned | 2016-04-15T11:55:35Z | |
dc.date.available | 2016-04-15T11:55:35Z | |
dc.date.issued | 2015-03 | |
dc.identifier.citation | COLL, Mariona, et al. Polarization Switching and Light-Enhanced Piezoelectricity in Lead Halide Perovskites. The journal of physical chemistry letters, 2015, vol. 6, no 8, p. 1408-1413. | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/158710 | |
dc.description.abstract | We investigate the ferroelectric properties of photovoltaic methylammonium lead halide CH3NH3PbI3 perovskite using piezoelectric force microscopy (PFM) and macroscopic polarization methods. The electric polarization is clearly observed by amplitude and phase hysteresis loops. However, the polarization loop decreases as the frequency is lowered, persisting for a short time only, in the one second regime, indicating that CH3NH3PbI3 does not exhibit permanent polarization at room temperature. This result is confirmed by macroscopic polarization measurement based on a standard capacitive method. We have observed a strong increase of piezoelectric response under illumination, consistent with the previously reported giant photoinduced dielectric constant at low frequencies. We speculate that an intrinsic charge transfer photoinduced dipole in the perovskite cage may lie at the origin of this effect. | ca_CA |
dc.description.sponsorShip | Financial support from the Spanish Ministerio de Economia y Competitividad (MINECO) through RyC contracts 2013-12448 and 2011-07726 and projects MAT2013-47192-C3-1-R and MAT2012-37776 | ca_CA |
dc.format.extent | 5 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | J. Phys. Chem. Lett., 2015, 6 (8) | ca_CA |
dc.rights | Copyright © 2015 American Chemical Society | ca_CA |
dc.rights | This is an open access article published under an ACS AuthorChoice License, which permits copying and redistribution of the article or any adaptations for non-commercial purposes. | |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | CH3NH3PbI3 | ca_CA |
dc.subject | dipole | ca_CA |
dc.subject | dipole moment | ca_CA |
dc.subject | ferroelectric | ca_CA |
dc.subject | hysteresis | ca_CA |
dc.subject | loops | ca_CA |
dc.subject | perovskite solar cells | ca_CA |
dc.subject | piezoelectric force microscopy | ca_CA |
dc.subject | polarization | ca_CA |
dc.title | Polarization Switching and Light-Enhanced Piezoelectricity in Lead Halide Perovskites | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/acs.jpclett.5b00502 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | http://pubs.acs.org/doi/abs/10.1021/acs.jpclett.5b00502 | ca_CA |
dc.type.version | info:eu-repo/semantics/publishedVersion |
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