Area-Selective Atomic Layer Deposition on Functionalized Graphene Prepared by Reversible Laser Oxidation

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2022-10-13
Major/Subject
Mcode
Degree programme
Language
en
Pages
9
Series
Advanced Materials Interfaces, Volume 9, issue 29
Abstract
Area-selective atomic layer deposition (ALD) is a promising “bottom-up” alternative to current nanopatterning techniques. While it has been successfully implemented in traditional microelectronic processes, selective nucleation of ALD on 2D materials has so far remained an unsolved challenge. In this article, a precise control of the selective deposition of ZnO on graphene at low temperatures (<250 °C) is demonstrated. Maskless femtosecond laser writing is used to locally activate predefined surface areas (down to 300 nm) by functionalizing graphene to achieve excellent ALD selectivity (up to 100%) in these regions for 6-nm-thick ZnO films. The intrinsic conductive properties of graphene can be restored by thermal annealing at low temperature (300 °C) without destroying the deposited ZnO patterns. As the graphene layer can be transferred onto other material surfaces, the present patterning technique opens new attractive ways for various applications in which the functionalized graphene is utilized as a template layer for selective deposition of desired materials.
Description
Publisher Copyright: © 2022 The Authors. Advanced Materials Interfaces published by Wiley-VCH GmbH.
Keywords
atomic layer deposition, graphene, surface engineering, two-photon oxidation
Other note
Citation
Mentel , K K , Emelianov , A V , Philip , A , Johansson , A , Karppinen , M & Pettersson , M 2022 , ' Area-Selective Atomic Layer Deposition on Functionalized Graphene Prepared by Reversible Laser Oxidation ' , Advanced Materials Interfaces , vol. 9 , no. 29 , 2201110 . https://doi.org/10.1002/admi.202201110