Ionic Charging by Local Imbalance at Interfaces in Hybrid Lead Halide Perovskites

Almora Rodriguez O, Guerrero A, Garcia-Belmonte G (2016)

Publication Language: English

Publication Type: Journal article, Original article

Publication year: 2016

Journal

Applied Physics Letters American Institute of Physics (AIP)

Book Volume: 108

Pages Range: 043903

Journal Issue: 4

URI: http://scitation.aip.org/content/aip/journal/apl/108/4/10.1063/1.4941033

DOI: 10.1063/1.4941033

Abstract

When mixed ionic-electronic conductors are used in optoelectronic devices. Ionic effects in perovskitesolar cells are believed to be distorted. Current hysteresis and switchable photovoltaic characteristics have been linked to the kinetics of ion migration. However, the nature of the specific ionic mechanism (or mechanisms) can not be understood. It is considered that the local rearrangement of the electrode interfaces gives rise to a high degree of apparent capacitive effects. CH₃NH₃PbI₃ samples show two main polarization processes and reveal the structure of the ionic double-layer at the interface with the non-reacting contacts. It is observed that the ionic charging, with a typical response time of 10 seconds, is a local effect confined in the vicinity of the electrode, which entails absence of net mobile ionic concentration (space-charge) in the material bulk.

Authors with CRIS profile

Osbel Almora Rodriguez Institute Materials for Electronics and Energy Technology (i-MEET)

Involved external institutions

Universitat Jaume I (UJI)

Spain (ES)

How to cite

APA:

Almora Rodriguez, O., Guerrero, A., & Garcia-Belmonte, G. (2016). Ionic Charging by Local Imbalance at Interfaces in Hybrid Lead Halide Perovskites. Applied Physics Letters, 108(4), 043903. https://dx.doi.org/10.1063/1.4941033

MLA:

Almora Rodriguez, Osbel, Antonio Guerrero, and Germà Garcia-Belmonte. "Ionic Charging by Local Imbalance at Interfaces in Hybrid Lead Halide Perovskites." Applied Physics Letters 108.4 (2016): 043903.

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