Discerning Recombination Mechanisms and Ideality Factors through Impedance Analysis of High-Efficiency Perovskite Solar Cells

Beitrag in einer Fachzeitschrift
(Originalarbeit)


Details zur Publikation

Autorinnen und Autoren: Almora Rodriguez O, Cho KT, Aghazada S, Zimmermann I, Matt GJ, Brabec C, Nazeeruddin MK, Garcia-Belmonte G
Zeitschrift: Nano Energy
Jahr der Veröffentlichung: 2018
Band: 48
Seitenbereich: 63-72
ISSN: 2211-2855
Sprache: Englisch


Abstract

The ubiquitous hysteresis in the current-voltage characteristic of perovskite solar cells (PSCs) interferes in a proper determination of the ideality factor (s). An alternative way of determining is by measuring the voltage variation of the ac resistances in conditions of negligible steady-state dc currents. Using a different perovskite absorber (3D perovskites layer based on CH3NH3PbI3 or mixed Cs0.1FA0.74MA0.13PbI2.48Br0.39) and a variety of interlayers (2D perovskite thin capping). The dominant resistive element always exhibits at exponential dependence with factor n ~ 2, irrespective of the type of perovskite and capping layers. In addition, a non-negligible resistive mechanism occurs at low-frequencies (with voltage-independent time constant ~ 1 s), which is related to the kinetic properties of the outer interfaces, with varying ideality factor (n = 2 for CH3NH3PbI3, and n = 1.5 for Cs0.1FA0.74MA0.13PbI2.48Br0.39). Our work identifies common features in the carrier recombination mechanisms among different types of high-efficiency PSCs, and simultaneously signals particularities on specific architectures, mostly in the carrier dynamics at outer interfaces. and n = 1.5 for Cs0.1FA0.74MA0.13PbI2.48Br0.39).


FAU-Autorinnen und Autoren / FAU-Herausgeberinnen und Herausgeber

Almora Rodriguez, Osbel
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)
Brabec, Christoph Prof. Dr.
Lehrstuhl für Werkstoffwissenschaften (Materialien der Elektronik und der Energietechnologie)


Zusätzliche Organisationseinheit(en)
Erlangen Graduate School in Advanced Optical Technologies


Einrichtungen weiterer Autorinnen und Autoren

École Polytechnique Fédérale de Lausanne (EPFL)
Universitat Jaume I (UJI)


Zitierweisen

APA:
Almora Rodriguez, O., Cho, K.T., Aghazada, S., Zimmermann, I., Matt, G.J., Brabec, C.,... Garcia-Belmonte, G. (2018). Discerning Recombination Mechanisms and Ideality Factors through Impedance Analysis of High-Efficiency Perovskite Solar Cells. Nano Energy, 48, 63-72. https://dx.doi.org/10.1016/j.nanoen.2018.03.042

MLA:
Almora Rodriguez, Osbel, et al. "Discerning Recombination Mechanisms and Ideality Factors through Impedance Analysis of High-Efficiency Perovskite Solar Cells." Nano Energy 48 (2018): 63-72.

BibTeX: 

Zuletzt aktualisiert 2019-09-04 um 08:32