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Improved Morphology Control Using a Modified Two-Step Method for Efficient Perovskite Solar Cells
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Physical Chemistry.
2014 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 6, no 21, 18751-18757 p.Article in journal (Refereed) Published
Abstract [en]

A two-step wet chemical synthesis method for methylammonium lead(II) triiodide (CH3NH3PbI3) perovskite is further developed for the preparation of highly reproducible solar cells, with the following structure: fluorine-doped tin oxide (FTO)/TiO2 (compact)/TiO2 (mesoporous)/CH3NH3PbI3/spiro-OMeTAD/Ag. The morphology of the perovskite layer could be controlled by careful variation of the processing conditions. Specifically, by modifying the drying process and inclusion of a dichloromethane treatment, more uniform films could be prepared, with longer emission lifetime in the perovskite material and longer electron lifetime in solar cell devices, as well as faster electron transport and enhanced charge collection at the selective contacts. Solar cell efficiencies up to 13.5% were obtained.

Place, publisher, year, edition, pages
2014. Vol. 6, no 21, 18751-18757 p.
Keyword [en]
photovoltaic, methylammonium lead(ii) triiodide, solution-processed semiconductor, mesoporous TiO2, dichloromethane, emission lifetime
National Category
Nano Technology
Identifiers
URN: urn:nbn:se:uu:diva-239985DOI: 10.1021/am504320hISI: 000344978200050PubMedID: 25317666OAI: oai:DiVA.org:uu-239985DiVA: diva2:775918
Available from: 2015-01-05 Created: 2015-01-05 Last updated: 2017-12-05Bibliographically approved

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El-Zohry, Ahmed M.Hagfeldt, AndersBoschloo, Gerrit

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