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/MAPbBr3/2D-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, EIL-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.

Muratov, D.s., Ishteev, A.r., Lypenko, D.a., Vanyushin, V.o., Gostishev, P., Perova, S., et al. (2019). Slot-Die-Printed Two-Dimensional ZrS3Charge Transport Layer for Perovskite Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES, 11(51), 48021-48028 [10.1021/acsami.9b16457].

Slot-Die-Printed Two-Dimensional ZrS3Charge Transport Layer for Perovskite Light-Emitting Diodes

Rossi D.;Auf Der Maur M.;Di Carlo A.
2019-01-01

Abstract

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/MAPbBr3/2D-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, EIL-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.
2019
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - ELETTRONICA
English
2D materials; ZrS3; exfoliation; perovskite light-emitting diodes; slot-die printing; transition metal trichalcogenides
Muratov, D.s., Ishteev, A.r., Lypenko, D.a., Vanyushin, V.o., Gostishev, P., Perova, S., et al. (2019). Slot-Die-Printed Two-Dimensional ZrS3Charge Transport Layer for Perovskite Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES, 11(51), 48021-48028 [10.1021/acsami.9b16457].
Muratov, Ds; Ishteev, Ar; Lypenko, Da; Vanyushin, Vo; Gostishev, P; Perova, S; Saranin, Ds; Rossi, D; Auf Der Maur, M; Volonakis, G; Giustino, F; Pers...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/226890
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