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Slot-Die-Printed Two-Dimensional ZrS3 Charge Transport Layer for Perovskite Light-Emitting Diodes
NUST MISiS, Russia.
NUST MISiS, Russia.
Russian Acad Sci, Russia.
NUST MISiS, Russia.
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2019 (English)In: ACS Applied Materials and Interfaces, ISSN 1944-8244, E-ISSN 1944-8252, Vol. 11, no 51, p. 48021-48028Article in journal (Refereed) Published
Abstract [en]

Liquid-phase exfoliation of zirconium trisulfide (ZrS3) was used to produce stable and ready-to-use inks for solution-processed semiconductor thin-film deposition. Ribbon-like layered crystals of ZrS3 were produced by the chemical vapor transport method and were then exfoliated in three different solvents: dimethylformamide, ethanol, and isopropyl alcohol. The resulting ZrS3 dispersions were compared for stability and the ability to form continuous films on top of the perovskite layer in light-emitting diodes with the ITO/PEDOT:PSS/MAPbBr(3)/2D-ZrS3/LiF/Al structure. Film deposition was performed by using either spray or slot-die coating methods. The slot-die coating route proved to produce better and more uniform films with respect to spray coating. We found that the 2D ZrS3 electron injection layer (EIL) stabilized the interface between the perovskite and LiF/Al cathode, reducing the turn-on voltage to 2.8 V and showing a luminance that does not degrade during voltage sweep. On the other hand, ELL-free devices show electroluminescence on the first voltage sweep that reduces almost to zero in the subsequent sweeps. Combining physical device simulation and density functional theory calculation, we are able to explain these results in terms of lowering the electron injection barrier at the cathode.

Place, publisher, year, edition, pages
AMER CHEMICAL SOC , 2019. Vol. 11, no 51, p. 48021-48028
Keywords [en]
2D materials; ZrS3; exfoliation; transition metal trichalcogenides; slot-die printing; perovskite light-emitting diodes
National Category
Condensed Matter Physics
Identifiers
URN: urn:nbn:se:liu:diva-163213DOI: 10.1021/acsami.9b16457ISI: 000505626900036PubMedID: 31793761OAI: oai:DiVA.org:liu-163213DiVA, id: diva2:1391029
Note

Funding Agencies|Ministry of Education and Science of the Russian FederationMinistry of Education and Science, Russian Federation [075-15-2019-872]; Graphene Flagship (Horizon 2020 grant GrapheneCore2) [785219]; Knut and Alice Walleneberg Foundation

Available from: 2020-02-03 Created: 2020-02-03 Last updated: 2020-02-03

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