Effect of surface wettability controlled by ultraviolet-ozone treatment on spin-coated ZnO seed layer and ZnO nanowires grown by hydrothermal method

Imtiaz Mahmud, Ji Sub Park, Han Jae Shin, Min Kyu Park, Do Kyung Lee, Hak Rin Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We presented improved density and aspect ratio of ZnO nanowires which were hydrothermally grown on spin coated ZnO seed layer. After UVO treatment on silicon surface, spin coated ZnO seed layer showed a high coverage density due to increased surface wettability without forming island like growth in conventional method. ZnO active nucleation sites showed a positive increasing relation with increase in coverage density. Whereas, increased spin coating time had risen surface roughness with rise in coverage area, UVO treated surface wettability change had showed lower surface roughness. Moreover, seed layer thickness remained unaffected for surface wettability changing effect. This let ZnO nanowires grow on the increased ZnO active nucleation sites without hindrance of other nanowires. Hence, higher density and aspect ratio ZnO nanowires were achieved by controlling surface wettability via UVO treatment.

Original languageEnglish
Title of host publication8th International Conference on Electrical and Computer Engineering
Subtitle of host publicationAdvancing Technology for a Better Tomorrow, ICECE 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages200-203
Number of pages4
ISBN (Electronic)9781479941667
DOIs
StatePublished - 28 Jan 2015
Event8th International Conference on Electrical and Computer Engineering, ICECE 2014 - Dhaka, Bangladesh
Duration: 20 Dec 201422 Dec 2014

Publication series

Name8th International Conference on Electrical and Computer Engineering: Advancing Technology for a Better Tomorrow, ICECE 2014

Conference

Conference8th International Conference on Electrical and Computer Engineering, ICECE 2014
Country/TerritoryBangladesh
CityDhaka
Period20/12/1422/12/14

Keywords

  • Surface treatment
  • Surface wettability
  • UVO treatment
  • ZnO growth
  • ZnO seed layer

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