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Ionic Field Screening in MAPbBr3 Crystals Revealed from Remnant Sensitivity in X-ray Detection
dc.contributor.author | Alvarez, Agustin | |
dc.contributor.author | Lédée, Ferdinand | |
dc.contributor.author | García-Batlle, Marisé | |
dc.contributor.author | López Varo, Pilar | |
dc.contributor.author | Gros-Daillon, Eric | |
dc.contributor.author | Mayén Guillén, Javier | |
dc.contributor.author | Verilhac, Jean-Marie | |
dc.contributor.author | Lemercier, Thibault | |
dc.contributor.author | Zaccaro, Julien | |
dc.contributor.author | Marsal, Lluis F. | |
dc.contributor.author | Garcia-Belmonte, Germà | |
dc.contributor.author | Almora Rodríguez, Osbel | |
dc.date.accessioned | 2023-10-06T08:34:33Z | |
dc.date.available | 2023-10-06T08:34:33Z | |
dc.date.issued | 2023-05-03 | |
dc.identifier.citation | Alvarez, A. O.; Lédée, F.; García-Batlle, M.; López-Varo, P.; Gros-Daillon, E.; Guillén, J. M.; Verilhac, J. M.; Lemercier, T.; Zaccaro, J.; Marsal, L. F.; Garcia-Belmonte, G.; Almora, O. Ionic Field Screening in MAPbBr3 Crystals Revealed from Remnant Sensitivity in X-ray Detection. ACS Phys. Chem Au 2023, 3, 4, 386-393. https://doi.org/10.1021/acsphyschemau.3c00002 | ca_CA |
dc.identifier.issn | 2694-2445 | |
dc.identifier.uri | http://hdl.handle.net/10234/204436 | |
dc.description.abstract | Research on metal halide perovskites as absorbers for X-ray detection is an attractive subject due to the optimal optoelectronic properties of these materials for high-sensitivity applications. However, the contact degradation and the long-term instability of the current limit the performance of the devices, in close causality with the dual electronic-ionic conductivity of these perovskites. Herein, millimeter-thick methylammonium-lead bromide (MAPbBr3) single and polycrystalline samples are approached by characterizing their long-term dark current and photocurrent under X-ray incidence. It is shown how both the dark current and the sensitivity of the detectors follow similar trends at short-circuit (V = 0 V) after biasing. By performing drift-diffusion numerical simulations, it is revealed how large ionic-related built-in fields not only produce relaxations to equilibrium lasting up to tens of hours but also continue to affect the charge kinetics under homogeneous low photogeneration rates. Furthermore, a method is suggested for estimating the ionic mobility and concentration by analyzing the initial current at short-circuit and the characteristic diffusion times. | ca_CA |
dc.format.extent | 8 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 | ACS Physical Chemistry Au, 2023, vol. 3, no 4 | ca_CA |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/ | ca_CA |
dc.subject | ion migration | ca_CA |
dc.subject | X-ray detectors | ca_CA |
dc.subject | metal halide perovskites | ca_CA |
dc.subject | sensitivity | ca_CA |
dc.subject | ion diffusion | ca_CA |
dc.title | Ionic Field Screening in MAPbBr3 Crystals Revealed from Remnant Sensitivity in X-ray Detection | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1021/acsphyschemau.3c00002 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://pubs.acs.org/doi/full/10.1021/acsphyschemau.3c00002 | ca_CA |
dc.description.sponsorship | This work has received funding from the European Union’s Horizon 2020 research and innovation program under the Photonics Public–Private Partnership (www.photonics21.org) with the project PEROXIS under grant agreement N° 871336. We acknowledge Dr. Phil Calado, Dr. Piers Barnes, Dr. Mohammed Azzouzi, and Benjamin Hilton for developing Driftfusion (18) and releasing it as open-source code. (29) We acknowledge Dr. Marian Chapran for electrode deposition. O.A. thanks the Spanish State Research Agency (Agencia Estatal de Investigación) for the Juan de la Cierva 2021 grant. | |
dc.type.version | info:eu-repo/semantics/publishedVersion | ca_CA |
project.funder.name | European Union | ca_CA |
oaire.awardNumber | info:eu-repo/grantAgreement/EC/H2020/871336 | ca_CA |
dc.subject.ods | 7. Energia asequible y no contaminante | ca_CA |
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