liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Synthesis of Vertically Aligned ZnO Nanorods Using Sol-gel Seeding and Colloidal Lithography Patterning
Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics. Linköping University, Faculty of Science & Engineering. School of Information Technology, Halmstad University, 301 18, Halmstad, Sweden.ORCID iD: 0000-0002-6850-1552
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics.ORCID iD: 0000-0002-9566-041X
Linköping University, Faculty of Science & Engineering. Linköping University, Department of Science and Technology, Physics, Electronics and Mathematics.ORCID iD: 0000-0001-6235-7038
Solid State Physics and NanoLund, Lund University, Box 118, 221 00, Lund, Sweden.
Show others and affiliations
2021 (English)In: Nanoscale Research Letters, ISSN 1931-7573, E-ISSN 1556-276X, Vol. 16, no 1, article id 46Article in journal (Refereed) Published
Abstract [en]

Different ZnO nanostructures can be grown using low-cost chemical bath deposition. Although this technique is cost-efficient and flexible, the final structures are usually randomly oriented and hardly controllable in terms of homogeneity and surface density. In this work, we use colloidal lithography to pattern (100) silicon substrates to fully control the nanorods' morphology and density. Moreover, a sol-gel prepared ZnO seed layer was employed to compensate for the lattice mismatch between the silicon substrate and ZnO nanorods. The results show a successful growth of vertically aligned ZnO nanorods with controllable diameter and density in the designated openings in the patterned resist mask deposited on the seed layer. Our method can be used to fabricate optimized devices where vertically ordered ZnO nanorods of high crystalline quality are crucial for the device performance.

Place, publisher, year, edition, pages
Springer, 2021. Vol. 16, no 1, article id 46
National Category
Condensed Matter Physics Materials Chemistry Nano Technology
Identifiers
URN: urn:nbn:se:liu:diva-174072DOI: 10.1186/s11671-021-03500-7ISI: 000627791200001PubMedID: 33709294OAI: oai:DiVA.org:liu-174072DiVA, id: diva2:1536913
Note

Funding: Lund University; AForsk Foundation [19-725]; Halmstad University; Linkoping University; Crafoord Foundation

Available from: 2021-03-12 Created: 2021-03-12 Last updated: 2021-04-12Bibliographically approved
In thesis
1. Synthesis and Characterization of ZnO/Graphene Nanostructures for Electronics and Photocatalysis
Open this publication in new window or tab >>Synthesis and Characterization of ZnO/Graphene Nanostructures for Electronics and Photocatalysis
2021 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Recent rapid development of electronics and electro-optical devices demands affordable and reliable materials with enhanced performance. Forming nanocomposites of already well-known materials is one possible route towards novel functional materials with desirable synergistic enhanced properties. Incompatible chemical properties, mismatched crystal structures and weak bonding interactions between the substances, however, often limit the number of possible nanocomposites. Moreover, using an inexpensive, facile, large-area and flexible fabrication technique is crucial to employ the new composites in industrially viable applications.

This thesis focuses on the synthesis and characterization of different zinc oxide/graphene (ZnO/GR) nanocomposites, well suited for optoelectronics and photocatalysis applications. Two different approaches of i) substrate-free random synthesis, and ii) template-assisted selective area synthesis were studied in detail. In the first approach, ZnO nanoparticles/rods were grown on GR. The obtained nanocomposites were investigated for better GR dispersity, electrical conductivity and optical properties. Besides, by adding silver iodide to the nanocomposite, an enhanced plasmonic solar-driven photocatalyst was synthesized and analyzed. In the second approach, arrays of single, vertically aligned ZnO nanorods were synthesized using a colloidal lithography-patterned sol-gel ZnO seed layer. Our demonstrated nanofabrication technique with simple, substrate independent, and large wafer-scale area compatibility improved the alignment and surface density of ZnO nanorods over large selective growth areas. Eventually, we found a novel method to further enhance the vertical alignment of the ZnO nanorods by introducing a GR buffer layer between the Si substrate and the ZnO seed layer, together with the mentioned patterning technique.

The synthesized nanocomposites were analyzed using a large variety of experimental techniques including electron microscopy, photoelectron spectroscopy, x-ray diffraction, photoluminescence and cathodoluminescence spectroscopy for in-depth studies of their morphology, chemical and optical properties. Our findings show that the designed ZnO/GR nanocomposites with vertically aligned ZnO nanorods of high crystalline quality, synthesized with the developed low-cost nanofabrication technique, can lead to novel devices offering higher performance at a significantly lower fabrication cost.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2021. p. 128
Series
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 2130
Keywords
zinc oxide, graphene, nanostructure, nanocomposite, conjugated electronics, photocatalysis, nanofabrication, colloidal lithography, chemical bath deposition, sol-gel
National Category
Composite Science and Engineering Nano Technology Materials Chemistry Condensed Matter Physics
Identifiers
urn:nbn:se:liu:diva-174835 (URN)10.3384/diss.diva-174835 (DOI)9789179296827 (ISBN)
Public defence
2021-05-07, TPM55, Täppan, Campus Norrköping, Norrköping, 10:15 (English)
Opponent
Supervisors
Available from: 2021-04-08 Created: 2021-04-07 Last updated: 2024-01-08Bibliographically approved

Open Access in DiVA

fulltext(2361 kB)137 downloads
File information
File name FULLTEXT01.pdfFile size 2361 kBChecksum SHA-512
2ad7b50bd8ee0938046a4f4f6355fa50fcaa932f94e57f6b09637b97c2849c41729c5243ae1acfd12d33bee06e4ab61e7068d2a60b48765a044d041e7970bfa8
Type fulltextMimetype application/pdf

Other links

Publisher's full textPubMed

Authority records

Chalangar, EbrahimNur, OmerWillander, MagnusPettersson, Håkan

Search in DiVA

By author/editor
Chalangar, EbrahimNur, OmerWillander, MagnusPettersson, Håkan
By organisation
Physics, Electronics and MathematicsFaculty of Science & Engineering
In the same journal
Nanoscale Research Letters
Condensed Matter PhysicsMaterials ChemistryNano Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 137 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
pubmed
urn-nbn

Altmetric score

doi
pubmed
urn-nbn
Total: 137 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf