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Critical analysis on the quality of stability studies of perovskite and dye solar cells

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Abstract

The success of perovskite and dye-sensitized solar cells will depend on their stability over the whole life-time. Aging tests are of utmost importance to identify deficiencies and to suggest cell improvements. Here we analyzed the quality of 261 recent aging tests and found serious shortcomings in current practices. For example, in about 50% of the studies only one sample was considered, meaning that the sample size was too small for statistical significance. We propose a new procedure for aging tests based on careful planning and scientific reporting. This includes estimating the required sample size for an aging test and avoiding so-called nuisance factors, i.e. unintended variations always present in real world testing. The improved procedure can provide more reliable information on stability and lifetime, which could contribute to better understanding of degradation mechanisms important for improving these photovoltaic technologies.

Graphical abstract: Critical analysis on the quality of stability studies of perovskite and dye solar cells

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Publication details

The article was received on 17 Sep 2017, accepted on 21 Dec 2017 and first published on 05 Feb 2018


Article type: Analysis
DOI: 10.1039/C7EE02670F
Citation: Energy Environ. Sci., 2018, Advance Article
  • Open access: Creative Commons BY license
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    Critical analysis on the quality of stability studies of perovskite and dye solar cells

    A. Tiihonen, K. Miettunen, J. Halme, S. Lepikko, A. Poskela and P. D. Lund, Energy Environ. Sci., 2018, Advance Article , DOI: 10.1039/C7EE02670F

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