Journal article 1743 views 324 downloads
UV photodecomposition of zinc acetate for the growth of ZnO nanowires
J S Lloyd,
C M Fung,
E J Alvim,
D Deganello,
K S Teng,
Vincent Teng 
,
Davide Deganello
,
Davide Deganello
Nanotechnology, Volume: 26, Issue: 26, Start page: 265303
Swansea University Authors:
Vincent Teng , Davide Deganello
-
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DOI (Published version): 10.1088/0957-4484/26/26/265303
Abstract
The thermal annealing of zinc precursors to form suitable seed layers for the growth of ZnO nanowires is common. However, the process is relatively long and involves high temperatures which limit substrate choice. In this study the use of a low temperature, ultra-violet (UV) exposure is demonstrated...
| Published in: | Nanotechnology |
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| ISSN: | 0957-4484 1361-6528 |
| Published: |
2015
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa22080 |
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| Abstract: |
The thermal annealing of zinc precursors to form suitable seed layers for the growth of ZnO nanowires is common. However, the process is relatively long and involves high temperatures which limit substrate choice. In this study the use of a low temperature, ultra-violet (UV) exposure is demonstrated for photodecomposition of zinc acetate precursors to form suitable seed layers. Comparisons are made between ZnO nanowire growth performed on seed layers produced through thermal annealing and exposure to UV. The dependence of growth density and nanowire diameter on UV exposure time is investigated. Growth quality is confirmed with energy dispersive x-ray (EDX) and x-ray diffraction analyses. The chemical composition of the exposed layers is investigated with EDX and x-ray photoelectron spectroscopy (XPS). Atomic force microscopy (AFM) is utilized to investigate morphological changes with respect to UV exposure. The diameter and density of the resultant growth was found to be strongly dependent on the UV exposure time. UV exposure times of only 25–30 s led to maximum density of growth and minimum diameter, significantly faster than thermal annealing. EDX, XPS and AFM analyses of the seed layers confirmed decomposition of the zinc precursor and morphological changes which influenced the growth. |
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| College: |
Faculty of Science and Engineering |
| Issue: |
26 |
| Start Page: |
265303 |