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Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals

[Image: see text] 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...

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Autores principales: García-Batlle, Marisé, Mayén Guillén, Javier, Chapran, Marian, Baussens, Oriane, Zaccaro, Julien, Verilhac, Jean-Marie, Gros-Daillon, Eric, Guerrero, Antonio, Almora, Osbel, Garcia-Belmonte, Germà
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8922277/
https://www.ncbi.nlm.nih.gov/pubmed/35310458
http://dx.doi.org/10.1021/acsenergylett.1c02578
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author García-Batlle, Marisé
Mayén Guillén, Javier
Chapran, Marian
Baussens, Oriane
Zaccaro, Julien
Verilhac, Jean-Marie
Gros-Daillon, Eric
Guerrero, Antonio
Almora, Osbel
Garcia-Belmonte, Germà
author_facet García-Batlle, Marisé
Mayén Guillén, Javier
Chapran, Marian
Baussens, Oriane
Zaccaro, Julien
Verilhac, Jean-Marie
Gros-Daillon, Eric
Guerrero, Antonio
Almora, Osbel
Garcia-Belmonte, Germà
author_sort García-Batlle, Marisé
collection PubMed
description [Image: see text] 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) cm(2) 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.
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spelling pubmed-89222772022-03-16 Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals García-Batlle, Marisé Mayén Guillén, Javier Chapran, Marian Baussens, Oriane Zaccaro, Julien Verilhac, Jean-Marie Gros-Daillon, Eric Guerrero, Antonio Almora, Osbel Garcia-Belmonte, Germà ACS Energy Lett [Image: see text] 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) cm(2) 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. American Chemical Society 2022-02-11 2022-03-11 /pmc/articles/PMC8922277/ /pubmed/35310458 http://dx.doi.org/10.1021/acsenergylett.1c02578 Text en © 2022 The Authors. Published by American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle García-Batlle, Marisé
Mayén Guillén, Javier
Chapran, Marian
Baussens, Oriane
Zaccaro, Julien
Verilhac, Jean-Marie
Gros-Daillon, Eric
Guerrero, Antonio
Almora, Osbel
Garcia-Belmonte, Germà
Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title_full Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title_fullStr Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title_full_unstemmed Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title_short Coupling between Ion Drift and Kinetics of Electronic Current Transients in MAPbBr(3) Single Crystals
title_sort coupling between ion drift and kinetics of electronic current transients in mapbbr(3) single crystals
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8922277/
https://www.ncbi.nlm.nih.gov/pubmed/35310458
http://dx.doi.org/10.1021/acsenergylett.1c02578
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