Journal article 1344 views 217 downloads
The effects of vacuum annealing on the conduction characteristics of ZnO nanorods
Chris J. Barnett,
Vasileios Mourgelas,
James McGettrick
,
Thierry Maffeis
,
Andrew Barron,
Richard Cobley
Materials Letters, Volume: 243, Pages: 144 - 147
Swansea University Authors:
James McGettrick , Thierry Maffeis
, Andrew Barron, Richard Cobley
-
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DOI (Published version): 10.1016/j.matlet.2019.02.005
Abstract
Optimised ZnO nanorods characteristics are essential for novel devices to operate efficiently. The effects of vacuum annealing on the electrical transport properties and defect chemistry of ZnO nanorods have been studied. Annealing to 500 °C removed surface contamination causing reduced resistance w...
Published in: | Materials Letters |
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ISSN: | 0167-577X |
Published: |
2019
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Online Access: |
Check full text
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URI: | https://cronfa.swan.ac.uk/Record/cronfa48830 |
Abstract: |
Optimised ZnO nanorods characteristics are essential for novel devices to operate efficiently. The effects of vacuum annealing on the electrical transport properties and defect chemistry of ZnO nanorods have been studied. Annealing to 500 °C removed surface contamination causing reduced resistance while annealing to 600 °C created acceptor defects, changing the contact type from ohmic to rectifying. At 700 °C donor defects reduced leading to increased resistance while annealing to 800 °C caused a reduction in all defects and decreased resistance. This suggests that contact resistance is the major contributor to the system’s resistance rather than the inherent material resistance alone. The results indicate that contact type can be controlled by manipulating the defect chemistry via controlled annealing. |
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Keywords: |
ZnO, Nanorods, Annealing, Photoluminescence, Conduction |
Start Page: |
144 |
End Page: |
147 |