No Cover Image

Journal article 297 views 12 downloads

Piezophototronic effect enhanced luminescence of zinc oxide nanowires / Yan Zhang; Lijie Li

Nano Energy, Volume: 22, Pages: 533 - 538

Swansea University Author: Li, Lijie

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...

Full description

Published in: Nano Energy
ISSN: 2211-2855
Published: 2016
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa26511
Tags: Add Tag
No Tags, Be the first to tag this record!
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.
College: College of Engineering
Start Page: 533
End Page: 538