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Enhanced output voltage generation via ZnO nanowires (50nm): Effect of diameter thinning on voltage enhancement

Ahmad, Mansoor; Iqbal, Muhammad Azhar; Kiely, Janice; Luxton, Richard W; Jabeen, Musarrat

Enhanced output voltage generation via ZnO nanowires (50nm): Effect of diameter thinning on voltage enhancement Thumbnail


Authors

Mansoor Ahmad

Muhammad Azhar Iqbal

Janice Kiely Janice.Kiely@uwe.ac.uk
Professor in Bio-electronics/Res In CoDi

Richard Luxton Richard.Luxton@uwe.ac.uk
Research Centre Director-IBST/Professor

Musarrat Jabeen



Abstract

© 2017 Elsevier Ltd 50nm ZnO nanowires were grown on indium tin oxide (ITO) coated poly ethylene terephthalate (PET) substrates by adapting facile aqueous growth technique using low temperature and vacuum conditions. Prior to growth of ZnO nanowires, pure hexagonal wurtzite structured seed layer was grown on flexible substrates. Surface morphology of nanostructure has been examined by scanning electron microscopy (SEM). Vertical growth orientation has been evidenced in XRD patterns. Minute external mechanical force (~50nN) has produced periodic voltage peaks. 2.5nm and 7.5nm thick sputtered Pt electrode have been tested to obtain output voltages. 50nm ZnO nanowires has produced a maximum output voltage of 2.717 volts having an output power density of 397.1mW/cm2. By squeezing the diameter, we have reduced reverse leakage current through nanowires and enhanced output voltage.

Journal Article Type Article
Acceptance Date Jan 5, 2017
Online Publication Date Jan 6, 2017
Publication Date May 1, 2017
Deposit Date Oct 19, 2017
Publicly Available Date Jan 6, 2018
Journal Journal of Physics and Chemistry of Solids
Print ISSN 0022-3697
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 104
Pages 281-285
DOI https://doi.org/10.1016/j.jpcs.2017.01.006
Keywords ZnO nanowires, piezoelectric potential, schottky contact, energy harvester
Public URL https://uwe-repository.worktribe.com/output/886789
Publisher URL https://doi.org/10.1016/j.jpcs.2017.01.006
Contract Date Oct 19, 2017

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