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Nanopatterned rGO/ZnO:Al seed layer for vertical growth of single ZnO nanorods
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering. Halmstad Univ, Sweden.ORCID iD: 0000-0002-6850-1552
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-8985-0604
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-9566-041X
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0001-6235-7038
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2023 (English)In: Nanotechnology, ISSN 0957-4484, E-ISSN 1361-6528, Vol. 34, no 25, article id 255301Article in journal (Refereed) Published
Abstract [en]

In this work, we demonstrate a novel low-cost template-assisted route to synthesize vertical ZnO nanorod arrays on Si (100). The nanorods were grown on a patterned double seed layer comprised of reduced graphene oxide (rGO) and Al-doped ZnO nanoparticles. The seed layer was fabricated by spray-coating the substrate with graphene and then dip-coating it into a Al -doped ZnO sol-gel solution. The growth template was fabricated from a double-layer resist, spin-coated on top of the rGO/ZnO:Al seed layer, and patterned by colloidal lithography. The results show a successful chemical bath deposition of vertically aligned ZnO nanorods with controllable diameter and density in the nanoholes in the patterned resist mask. Our novel method can presumably be used to fabricate electronic devices on virtually any smooth substrate with a thermal budget of 1 min at 300 degrees C with the seed layer acting as a conductive strain-relieving back contact. The top contact can simply be made by depositing a suitable transparent conductive oxide or metal, depending on the specific application.

Place, publisher, year, edition, pages
IOP Publishing Ltd , 2023. Vol. 34, no 25, article id 255301
Keywords [en]
zinc oxide; nanorod arrays; vertical growth; colloidal lithography; nanofabrication; sol-gel; reduced graphene oxide
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:liu:diva-193361DOI: 10.1088/1361-6528/acc662ISI: 000970495400001PubMedID: 36947870OAI: oai:DiVA.org:liu-193361DiVA, id: diva2:1754246
Note

Funding Agencies|AForsk Foundation [19-725]

Available from: 2023-05-03 Created: 2023-05-03 Last updated: 2024-01-08

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