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Photonics 2015, 2(4), 1101-1115; doi:10.3390/photonics2041101

Transient Response of Organo-Metal-Halide Solar Cells Analyzed by Time-Resolved Current-Voltage Measurements

1
Department of Electrical Engineering, Stanford University, Stanford, CA 94305, USA
2
Department of Materials Science an Engineering, Stanford University, Stanford, CA 94305, USA
3
Department of Chemistry, Lund University, 22241 Lund, Sweden
Present address: University of Oxford, Physics Department, Clarendon Laboratory, Parks Road, OX1 3PU, Oxford, UK.
*
Author to whom correspondence should be addressed.
Received: 3 November 2015 / Revised: 18 November 2015 / Accepted: 19 November 2015 / Published: 24 November 2015
(This article belongs to the Special Issue Perovskite Photovoltaic and Optoelectronics)
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Abstract

The determination of the power conversion efficiency of solar cells based on organo-metal-halides is subject to an ongoing debate. As solar cell devices may exhibit very slow transient response, current-voltage scans in different directions may not be congruent, which is an effect often referred to as hysteresis. We here discuss time-resolved current-voltage measurements as a means to evaluate appropriate delay times (voltage settling times) to be used in current-voltage measurements of solar cells. Furthermore, this method allows the analysis of transient current response to extract time constants that can be used to compare characteristic differences between devices of varying architecture types, selective contacts and changes in devices due to storage or degradation conditions. View Full-Text
Keywords: hysteresis; staircase voltammetry; polarization; perovskites; ion migration hysteresis; staircase voltammetry; polarization; perovskites; ion migration
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Christoforo, M.G.; Hoke, E.T.; McGehee, M.D.; Unger, E.L. Transient Response of Organo-Metal-Halide Solar Cells Analyzed by Time-Resolved Current-Voltage Measurements. Photonics 2015, 2, 1101-1115.

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