Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals
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Metadatos
Mostrar el registro completo del ítemcomunitat-uji-handle:10234/9
comunitat-uji-handle2:10234/160292
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INVESTIGACIONMetadatos
Título
Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single CrystalsAutoría
Fecha de publicación
2022-03-11Editor
American Chemical SocietyISSN
2380-8195Cita bibliográfica
García-Batlle, M.; Mayén Guillén, J.; Chapran, M.; Baussens, O.; Zaccaro, J.; Verilhac, J. M.; Gros-Daillon, M.; Guerrero, M.; Almora, O.; Garcia-Belmonte, G. Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr3 Single Crystals. ACS Energy Letters 2022 7 (3), 946-951. DOI: 10.1021/acsenergylett.1c02578Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
https://pubs.acs.org/doi/abs/10.1021/acsenergylett.1c02578Versión
info:eu-repo/semantics/publishedVersionPalabras clave / Materias
Resumen
The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic ... [+]
The optoelectronic properties of halide perovskite materials have fostered their utilization in many applications. Unravelling their working mechanisms remains challenging because of their mixed ionic–electronic conductive nature. By registering, with high reproducibility, the long-time current transients of a set of single-crystal methylammonium lead tribromide samples, the ion migration process was proved. Sample biasing experiments (ionic drift), with characteristic times exhibiting voltage dependence as ∝ V–3/2, is interpreted with an ionic migration model obeying a ballistic-like voltage-dependent mobility (BVM) regime of space-charge-limited current. Ionic kinetics effectively modify the long-time electronic current, while the steady-state electronic currents’ behavior is nearly ohmic. Using the ionic dynamic doping model (IDD) for the recovering current at zero bias (ion diffusion), the ionic mobility is estimated to be ∼10–6 cm2 V–1 s–1. Our findings suggest that ionic currents are negligible in comparison to the electronic currents; however, they influence them via changes in the charge density profile. [-]
Publicado en
ACS Energy Letters 2022 7 (3), 946-951Entidad financiadora
Generalitat Valenciana
Código del proyecto o subvención
GRISOLIAP/2018/073
Proyecto de investigación
info:eu-repo/grantAgreement/EC/H2020/871336Derechos de acceso
info:eu-repo/semantics/openAccess
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