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Characterisation of a graphene/NPB structure with Re₂O₇ as an interfacial layer for OLED application

Paweł Krukowski Michał Piskorski Maciej Rogala Paweł Dąbrowski Iaroslav Lutsyk Witold Kozłowski Dorota A. Kowalczyk Patryk Krempiński Maxime Le Ster Aleksandra Nadolska Klaudia Toczek Przemysław Przybysz Rafał Dunal Wojciech Ryś Shankhanil Sarkar Beata Łuszczyńska Paweł J. Kowalczyk

Opto-Electronics Review | 2024 | 32 | 1 | e147913 | DOI: 10.24425/opelre.2024.148441

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Abstract

A graphene/NPB structure with Re₂O₇ as an interfacial layer in the context of its potential use in the design of an organic light-emitting diode (OLED) is investigated. The X-ray photoelectron spectroscopy (XPS) study shows the formation of the Re₂O₇ phase on a monolayer graphene on quartz during thermal deposition in ultra-high vacuum (UHV). The ultraviolet photoelectron spectroscopy (UPS) study shows an enhancement of the work function of the graphene heterostructure after deposition of the Re₂O₇ layer up to 5.4 eV. The hole injection barrier between the Re₂O₇/graphene heterostructure and the N-bis-(1-naphthyl)-N,N-diphenyl-(1,1-biphenyl)-4,4-diamine (NPB) layer was estimated to be 0.35 eV, which is very promising for a good OLED performance.

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Authors and Affiliations

Paweł Krukowski

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ORCID:

Michał Piskorski

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ORCID:

Maciej Rogala

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ORCID:

Paweł Dąbrowski

e-mail:

ORCID:

Iaroslav Lutsyk

e-mail:

ORCID:

Witold Kozłowski

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ORCID:

Dorota A. Kowalczyk

e-mail:

ORCID:

Patryk Krempiński

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ORCID:

Maxime Le Ster

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ORCID:

Aleksandra Nadolska

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ORCID:

Klaudia Toczek

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ORCID:

Przemysław Przybysz

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ORCID:

Rafał Dunal

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ORCID:

Wojciech Ryś

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ORCID:

Shankhanil Sarkar

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ORCID:

Beata Łuszczyńska

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ORCID:

Paweł J. Kowalczyk

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Department of Solid State Physics (member of National Photovoltaic Laboratory, Poland), Faculty of Physics and Applied Informatics, University of Lodz, ul. Pomorska 149/153, 90-236 Łódź, Poland
Department of Solid State Physics (member of National Photovoltaic Laboratory, Poland), Faculty of Physics and Applied Informatics, University of Lodz, 149/153 Pomorska St., 90–236 Łódź, Poland
Department of Physics, University of Kalyani, Kalyani-741235, Nadia, West Bengal, India
Department of Molecular Physics (member of National Photovoltaic Laboratory, Poland), Lodz University of Technology, ul. Żeromskiego 116, 90-924 Łódź, Poland

Graphene on quartz modified with rhenium oxide as a semitransparent electrode for organic electronics

Opto-Electronics Review | 2022 | 30 | 4 | e141953 | DOI: 10.24425/opelre.2022.141953

Keywords graphene anode rhenium oxide organic light-emitting diode

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Abstract

The presented research shows that commercially available graphene on quartz modified with rhenium oxide meets the requirements for its use as a conductive and transparent anode in optoelectronic devices. The cluster growth of rhenium oxide enables an increase in the work function of graphene by 1.3 eV up to 5.2 eV, which guarantees an appropriate adjustment to the energy levels of organic semiconductors used in organic light-emitting diode devices.

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Bibliography

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Authors and Affiliations

Paweł Krukowski

e-mail:

ORCID:

Michał Piskorski

e-mail:

ORCID:

Ruslana Udovytska

e-mail:

ORCID:

Dorota A. Kowalczyk

e-mail:

ORCID:

Iaroslav Lutsyk

e-mail:

ORCID:

Maciej Rogala

e-mail:

ORCID:

Paweł Dąbrowski

e-mail:

ORCID:

Witold Kozłowski

e-mail:

ORCID:

Beata Łuszczyńska

e-mail:

ORCID:

Jarosław Jung

e-mail:

ORCID:

Jacek Ulański

e-mail:

ORCID:

Krzysztof Matuszek

e-mail:

ORCID:

Aleksandra Nadolska

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ORCID:

Przemysław Przybysz

e-mail:

ORCID:

Wojciech Ryś

e-mail:

ORCID:

Klaudia Toczek

e-mail:

ORCID:

Rafał Dunal

e-mail:

ORCID:

Patryk Krempiński

e-mail:

ORCID:

Justyna Czerwińska

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ORCID:

Maxime Le Ster

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ORCID:

Marcin Skulimowski

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ORCID:

Paweł J. Kowalczyk

e-mail:

ORCID:

Department of Solid State Physics (member of National Photovoltaic Laboratory, Poland), Faculty of Physics and Applied Informatics, University of Lodz, 149/153 Pomorska St., 90–236 Łódź, Poland
Department of Molecular Physics (member of National Photovoltaic Laboratory, Poland), Lodz University of Technology, 116 Żeromskiego St., 90– 924 Łódź, Poland
Department of Intelligent Systems, Faculty of Physics and Applied Informatics, University of Lodz, 149/152 Pomorska St., 90–236 Łódź, Poland

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Characterisation of a graphene/NPB structure with Re2O7 as an interfacial layer for OLED application

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Graphene on quartz modified with rhenium oxide as a semitransparent electrode for organic electronics

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Characterisation of a graphene/NPB structure with Re₂O₇ as an interfacial layer for OLED application