Journal article 1088 views 216 downloads
Piezophototronic effect enhanced luminescence of zinc oxide nanowires
Yan Zhang,
Lijie Li 
Nano Energy, Volume: 22, Pages: 533 - 538
Swansea University Author:
Lijie Li
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DOI (Published version): 10.1016/j.nanoen.2016.02.039
Abstract
Experimental findings on electroluminescence or photoluminescence of ZnO nanowires have been drawn much attention due to their promising applications in many areas. One of the current challenges on this technology is a deeper understanding of this phenomenon in order to adopt it into practical devic...
| Published in: | Nano Energy |
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| ISSN: | 2211-2855 |
| Published: |
2016
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa26511 |
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| Abstract: |
Experimental findings on electroluminescence or photoluminescence of ZnO nanowires have been drawn much attention due to their promising applications in many areas. One of the current challenges on this technology is a deeper understanding of this phenomenon in order to adopt it into practical device designs. In this work, a theoretical analysis of the stimulated emission of ZnO nanowires taking into consideration of the piezotronics effect has been conducted using the quantum mechanics theory. It is revealed that extra piezoelectric charges induced by applied mechanical forces increase the overall charge density of the nanowire, subsequently enhancing the emission intensity. Electronic bandgap varying with the diameter of the nanowire determines the peak value in the electromagnetic spectrum. Both wavelength and intensity of the stimulated emission can be tuned by controlling the dimension of the nanowires and external applied mechanical forces. |
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| College: |
Faculty of Science and Engineering |
| Start Page: |
533 |
| End Page: |
538 |