Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/135443
Title: FLUORESCENCE ENHANCEMENT AND MODIFICATION OF CARBON-ENRICHED ZINC OXIDE NANOWIRES VIA FIELD EMISSION
Authors: ANDREW BAH SHEN JING
Keywords: field emission, UV fluorescence, carbon-enriched zinc oxide, nanowires, fluorescence enhancement, fluorescence modification
Issue Date: 12-Jan-2017
Source: ANDREW BAH SHEN JING (2017-01-12). FLUORESCENCE ENHANCEMENT AND MODIFICATION OF CARBON-ENRICHED ZINC OXIDE NANOWIRES VIA FIELD EMISSION. ScholarBank@NUS Repository.
Abstract: This Master’s thesis reports the investigation into the changes in UV fluorescence of self grown carbon-enriched zinc oxide (C-ZnO) nanowires when the nanowires are used as an electron emission source in a field emission setup. Results show an increase in UV fluorescence intensity, changes in photoluminescence (PL) exciton-to-defect peak ratio, as well as a blue shift of the fluorescence spectra of the nanowires after use as field electron emitters. Surface analysis tools (PL, SEM, EDX, XPS, UPS and HRTEM) are used to probe the nature of these nanowires before and after field emission process. The changes in fluorescence are attributed to modifications of the chemical composition and crystalline structure of the nanowires and is hypothesized to be caused by the joule heating generated by the passage of electrons through the nanowires during the field emission process.
URI: http://scholarbank.nus.edu.sg/handle/10635/135443
Appears in Collections:Master's Theses (Open)

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