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19 September 2017 Towards a reliable measurement protocol for perovskite solar cells (Conference Presentation)
Eugen Zimmermann, Ka Kan Wong, Michael Müller, Hao Hu, Philipp Ehrenreich, Carola Ebenhoch, Thomas Pfadler, Lukas Schmidt-Mende
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Proceedings Volume 10363, Organic, Hybrid, and Perovskite Photovoltaics XVIII; 103630O (2017) https://doi.org/10.1117/12.2273712
Event: SPIE Organic Photonics + Electronics, 2017, San Diego, California, United States
Abstract
The rapid rise of power conversion efficiency of metal-halide perovskite solar cells beyond 20 % has drawn huge attention. Recent certified efficiencies, however, have been marked as “unstabilized” as perovskite solar cells tend to show a hysteretic behaviour during current density-voltage (J-V) measurements. This leads to deviating results for varying scan parameters and conditions, which challenges reliable and comparable results. In particular, the extent of this behaviour is highly dependent on device preparation method, architecture, device history, and more importantly on measurement preconditions and scan rate. Thus, the demand for reliable stabilized values arises which are reproducible and comparable among different laboratories. Here we introduce an adaptive tracking of the maximum power point and the open circuit voltage. We compare these values with device characteristics derived from standard J-V measurements. Furthermore, we discuss the challenges of a correct efficiency determination and provide the algorithms for easy implementation in existing measurement systems.
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Eugen Zimmermann, Ka Kan Wong, Michael Müller, Hao Hu, Philipp Ehrenreich, Carola Ebenhoch, Thomas Pfadler, and Lukas Schmidt-Mende "Towards a reliable measurement protocol for perovskite solar cells (Conference Presentation)", Proc. SPIE 10363, Organic, Hybrid, and Perovskite Photovoltaics XVIII, 103630O (19 September 2017); https://doi.org/10.1117/12.2273712
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KEYWORDS
Solar cells
Detection and tracking algorithms
Reliability
Standards development
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