Why perovskite solar cells with high efficiency show small IV-curve hysteresis

Neukom, Martin; Züfle, Simon; Knapp, Evelyne; Makha, Mohammed; Hany, Roland; Ruhstaller, Beat

doi:10.1016/j.solmat.2017.05.021

Publication type:	Article in scientific journal
Type of review:	Peer review (publication)
Title:	Why perovskite solar cells with high efficiency show small IV-curve hysteresis
Authors:	Neukom, Martin Züfle, Simon Knapp, Evelyne Makha, Mohammed Hany, Roland Ruhstaller, Beat
DOI:	10.1016/j.solmat.2017.05.021
Published in:	Solar Energy Materials & Solar Cells
Volume(Issue):	169
Page(s):	159
Pages to:	166
Issue Date:	2017
Publisher / Ed. Institution:	Elsevier
ISSN:	0927-0248
Language:	English
Subject (DDC):	621.3: Electrical, communications, control engineering
Abstract:	There is increasing evidence that the presence of mobile ions in perovskite solar cells can cause a current-voltage curve hysteresis. However, it is still subject of ongoing debates how exactly mobile ions influence the device operation. We use drift-diffusion simulations incorporating mobile ions to describe IV-curves of preconditioned methylammonium lead iodide perovskite solar cells and compare them with experimental results. Our simulation results show that the hysteresis depends on the extent of surface recombination and on the diffusion length of charge carriers. We provide a detailed explanation for the reduced hysteresis of perovskite solar cells with high power conversion efficiencies. We find that in high-efficiency solar cells ion migration is still present, but does not cause a hysteresis effect. In these devices charge extraction is mainly driven by diffusion of free electrons and holes.
URI:	https://digitalcollection.zhaw.ch/handle/11475/2766
Fulltext version:	Published version
License (according to publishing contract):	Licence according to publishing contract
Departement:	School of Engineering
Organisational Unit:	Institute of Computational Physics (ICP)
Appears in collections:	Publikationen School of Engineering

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Neukom, M., Züfle, S., Knapp, E., Makha, M., Hany, R., & Ruhstaller, B. (2017). Why perovskite solar cells with high efficiency show small IV-curve hysteresis. Solar Energy Materials & Solar Cells, 169, 159–166. https://doi.org/10.1016/j.solmat.2017.05.021

Neukom, M. et al. (2017) ‘Why perovskite solar cells with high efficiency show small IV-curve hysteresis’, Solar Energy Materials & Solar Cells, 169, pp. 159–166. Available at: https://doi.org/10.1016/j.solmat.2017.05.021.

M. Neukom, S. Züfle, E. Knapp, M. Makha, R. Hany, and B. Ruhstaller, “Why perovskite solar cells with high efficiency show small IV-curve hysteresis,” Solar Energy Materials & Solar Cells, vol. 169, pp. 159–166, 2017, doi: 10.1016/j.solmat.2017.05.021.

NEUKOM, Martin, Simon ZÜFLE, Evelyne KNAPP, Mohammed MAKHA, Roland HANY und Beat RUHSTALLER, 2017. Why perovskite solar cells with high efficiency show small IV-curve hysteresis. Solar Energy Materials & Solar Cells. 2017. Bd. 169, S. 159–166. DOI 10.1016/j.solmat.2017.05.021

Neukom, Martin, Simon Züfle, Evelyne Knapp, Mohammed Makha, Roland Hany, and Beat Ruhstaller. 2017. “Why Perovskite Solar Cells with High Efficiency Show Small IV-Curve Hysteresis.” Solar Energy Materials & Solar Cells 169: 159–66. https://doi.org/10.1016/j.solmat.2017.05.021.

Neukom, Martin, et al. “Why Perovskite Solar Cells with High Efficiency Show Small IV-Curve Hysteresis.” Solar Energy Materials & Solar Cells, vol. 169, 2017, pp. 159–66, https://doi.org/10.1016/j.solmat.2017.05.021.