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

dc.contributorAalto Universityen
dc.contributor.authorTiihonen, Armi
dc.contributor.authorMiettunen, Kati
dc.contributor.authorHalme, Janne
dc.contributor.authorLepikko, Sakari
dc.contributor.authorPoskela, Aapo
dc.contributor.authorLund, Peter
dc.contributor.departmentNew Energy Technologies
dc.contributor.departmentDepartment of Bioproducts and Biosystems
dc.contributor.departmentDepartment of Applied Physics
dc.description.abstractThe 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.en
dc.description.versionPeer revieweden
dc.identifier.citationTiihonen , A , Miettunen , K , Halme , J , Lepikko , S , Poskela , A & Lund , P 2018 , ' Critical analysis on the quality of stability studies of perovskite and dye solar cells ' , Energy and Environmental Science , vol. 11 , no. 4 , pp. 730-738 .
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dc.relation.ispartofseriesEnergy and Environmental Scienceen
dc.titleCritical analysis on the quality of stability studies of perovskite and dye solar cellsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi