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Mechanistic Insight...
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Klipfel, NadjaEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
(author)
Mechanistic Insights into the Role of the Bis(trifluoromethanesulfonyl) imide Ion in Coevaporated p-i-n Perovskite Solar Cells
- Article/chapterEnglish2021
Publisher, publication year, extent ...
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2021-10-27
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American Chemical Society (ACS),2021
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Numbers
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LIBRIS-ID:oai:DiVA.org:uu-461981
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-461981URI
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https://doi.org/10.1021/acsami.1c10117DOI
Supplementary language notes
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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Hybrid lead halide perovskites have reached comparable efficiencies to state-of-the-art silicon solar cell technologies. However, a remaining key challenge toward commercialization is the resolution of the perovskite device instability. In this work, we identify for the first time the mobile nature of bis-(trifluoromethanesulfonyl)imide (TFSI-), a typical anion extensively employed in p-type dopants for 2,2'7,7'-tetrakis(N,N-di-p-methoxyphenylamine)-9,9'spirofluorene (spiro-OMeTAD). We demonstrate that TFSI- can migrate through the perovskite layer via the grain boundaries and accumulate at the perovskite/electrontransporting layer (ETL) interface. Our findings reveal that the migration of TFSI- enhances the device performance and stability, resulting in highly stable p-i-n cells that retain 90% of their initial performance after 1600 h of continuous testing. Our systematic study, which targeted the effect of the nature of the dopant and its concentration, also shows that TFSI- acts as a dynamic defect-healing agent, which self-passivates the perovskite crystal defects during the migration process and thereby decreases nonradiative recombination pathways.
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Kanda, HiroyukiEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Sutanto, Albertus AdrianEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Mensi, MounirEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Igci, CansuEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Leifer, Klaus,1965-Uppsala universitet,Tillämpad materialvetenskap,Ecole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.(Swepub:uu)kllei839
(author)
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Brooks, KeithEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Kinge, SachinToyota Motor Co Ltd, Adv Technol Div, Toyota Motor Tech Ctr, B-1930 Zaventem, Belgium.
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Roldan-Carmona, CristinaEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.;Univ Valencia, Inst Ciencia Mol ICMol, C-J Beltran 2, Paterna 46980, Spain.
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Momblona, CristinaEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Dyson, Paul J.Ecole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
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Nazeeruddin, Mohammad KhajaEcole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.
(author)
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Ecole Polytech Fed Lausanne EPFL Valais Wallis, Inst Chem Sci & Engn, Grp Mol Engn Funct Mat, CH-1951 Sion, Switzerland.Tillämpad materialvetenskap
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In:ACS Applied Materials and Interfaces: American Chemical Society (ACS)13:44, s. 52450-524601944-82441944-8252
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Klipfel, Nadja
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Kanda, Hiroyuki
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Sutanto, Albertu ...
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Mensi, Mounir
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Igci, Cansu
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Brooks, Keith
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