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| Description: | Crystalline indium oxide nanowires were synthesized following optimization of growth parameters. Oxygen vacancies were found to impact the optical and electronic properties of the as-grown nanowires. Photoluminescence measurements showed a strong U.V emission peak at 3.18 eV and defect peaks in the visible region at 2.85 eV, 2.66 eV and 2.5 eV. The defect peaks are attributed to neutral and charged states of oxygen vacancies. Post-growth annealing in oxygen environment and passivation with sulphur are shown to be effective in reducing the intensity of the defect induced emission. The as-grown nanowires connected in an FET type of configuration shows n-type conductivity. A single indium oxide nanowire with ohmic contacts was found to be sensitive to gas molecules adsorbed on its surface. |
| Creator(s): | Gali, Pradeep |
| Creation Date: | December 2011 |
| Partner(s): |
UNT Libraries
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| Collection(s): |
UNT Theses and Dissertations
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| Usage: |
Total Uses: 25
Past 30 days: 7
Yesterday: 0
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| Publisher Info: |
Publisher Name: University of North Texas
Publisher Info: www.unt.edu
Place of Publication: Denton, Texas
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| Original Creation Date: | December 2011 | |
| Description: | Crystalline indium oxide nanowires were synthesized following optimization of growth parameters. Oxygen vacancies were found to impact the optical and electronic properties of the as-grown nanowires. Photoluminescence measurements showed a strong U.V emission peak at 3.18 eV and defect peaks in the visible region at 2.85 eV, 2.66 eV and 2.5 eV. The defect peaks are attributed to neutral and charged states of oxygen vacancies. Post-growth annealing in oxygen environment and passivation with sulphur are shown to be effective in reducing the intensity of the defect induced emission. The as-grown nanowires connected in an FET type of configuration shows n-type conductivity. A single indium oxide nanowire with ohmic contacts was found to be sensitive to gas molecules adsorbed on its surface. |
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| Degree: |
Department:
Department of Electrical Engineering
Discipline:
Electrical Engineering
Level:
Master's
Name:
Master of Science
PublicationType:
Master's Thesis
Grantor:
University of North Texas
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| Keyword(s): | Indium oxide | gas sensors | oxygen vacancies | |
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| Partner: |
UNT Libraries
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| Collection: |
UNT Theses and Dissertations
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| Resource Type: | Thesis or Dissertation | |
| Format: | Text | |
| Rights: |
Access:
Use restricted to UNT Community
Holder:
Gali, Pradeep
License:
Copyright
Statement:
Copyright is held by the author, unless otherwise noted. All rights reserved.
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