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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 Orcid Logo, Davide Deganello Orcid Logo

Nanotechnology, Volume: 26, Issue: 26, Start page: 265303

Swansea University Authors: Vincent Teng Orcid Logo, Davide Deganello Orcid Logo

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...

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Published in: Nanotechnology
ISSN: 0957-4484 1361-6528
Published: 2015
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URI: https://cronfa.swan.ac.uk/Record/cronfa22080
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spelling 2017-09-28T16:09:26.7902855 v2 22080 2015-06-15 UV photodecomposition of zinc acetate for the growth of ZnO nanowires 98f529f56798da1ba3e6e93d2817c114 0000-0003-4325-8573 Vincent Teng Vincent Teng true false ea38a0040bdfd3875506189e3629b32a 0000-0001-8341-4177 Davide Deganello Davide Deganello true false 2015-06-15 EEEG 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. Journal Article Nanotechnology 26 26 265303 0957-4484 1361-6528 11 6 2015 2015-06-11 10.1088/0957-4484/26/26/265303 http://iopscience.iop.org/0957-4484/26/26/265303/ COLLEGE NANME Electronic and Electrical Engineering COLLEGE CODE EEEG Swansea University 2017-09-28T16:09:26.7902855 2015-06-15T18:06:49.4692240 College of Engineering Engineering J S Lloyd 1 C M Fung 2 E J Alvim 3 D Deganello 4 K S Teng 5 Vincent Teng 0000-0003-4325-8573 6 Davide Deganello 0000-0001-8341-4177 7 0022080-15062015180800.pdf UV__photodecomposition__of__zinc__acetate__for__the__growth__of__ZnO__nanowires.pdf 2015-06-15T18:08:00.6670000 Output 518191 application/pdf Accepted Manuscript true 2016-06-12T00:00:00.0000000 false
title UV photodecomposition of zinc acetate for the growth of ZnO nanowires
spellingShingle UV photodecomposition of zinc acetate for the growth of ZnO nanowires
Vincent Teng
Davide Deganello
title_short UV photodecomposition of zinc acetate for the growth of ZnO nanowires
title_full UV photodecomposition of zinc acetate for the growth of ZnO nanowires
title_fullStr UV photodecomposition of zinc acetate for the growth of ZnO nanowires
title_full_unstemmed UV photodecomposition of zinc acetate for the growth of ZnO nanowires
title_sort UV photodecomposition of zinc acetate for the growth of ZnO nanowires
author_id_str_mv 98f529f56798da1ba3e6e93d2817c114
ea38a0040bdfd3875506189e3629b32a
author_id_fullname_str_mv 98f529f56798da1ba3e6e93d2817c114_***_Vincent Teng
ea38a0040bdfd3875506189e3629b32a_***_Davide Deganello
author Vincent Teng
Davide Deganello
author2 J S Lloyd
C M Fung
E J Alvim
D Deganello
K S Teng
Vincent Teng
Davide Deganello
format Journal article
container_title Nanotechnology
container_volume 26
container_issue 26
container_start_page 265303
publishDate 2015
institution Swansea University
issn 0957-4484
1361-6528
doi_str_mv 10.1088/0957-4484/26/26/265303
college_str College of Engineering
hierarchytype
hierarchy_top_id collegeofengineering
hierarchy_top_title College of Engineering
hierarchy_parent_id collegeofengineering
hierarchy_parent_title College of Engineering
department_str Engineering{{{_:::_}}}College of Engineering{{{_:::_}}}Engineering
url http://iopscience.iop.org/0957-4484/26/26/265303/
document_store_str 1
active_str 0
description 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.
published_date 2015-06-11T03:32:36Z
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