Controlling the visible luminescence in hydrothermal ZnO

Lem, LLC; Phillips, MR; Ton-That, C

Controlling the visible luminescence in hydrothermal ZnO

Lem, LLC Phillips, MR

Ton-That, C

Permalink

Publication Type:: Journal Article
Citation:: Journal of Luminescence, 2014, 154 pp. 387 - 391
Issue Date:: 2014-01-01

Closed Access

	Filename	Description	Size
	JofLum 154 387 2014.pdf	Published Version	986.34 kB	Adobe PDF	View/Open

Copyright Clearance Process

Recently Added
In Progress
Closed Access

This item is closed access and not available.

Full metadata record

Field	Value	Language
dc.contributor.author	Lem, LLC	en_US
dc.contributor.author	Phillips, MR https://orcid.org/0000-0003-1522-9281	en_US
dc.contributor.author	Ton-That, C https://orcid.org/0000-0003-3276-1739	en_US
dc.date.issued	2014-01-01	en_US
dc.identifier.citation	Journal of Luminescence, 2014, 154 pp. 387 - 391	en_US
dc.identifier.issn	0022-2313	en_US
dc.identifier.uri	http://hdl.handle.net/10453/32779
dc.description.abstract	Cathodoluminescence spectra have been measured in hydrothermal and hydrogen-doped ZnO at different excitation densities and temperatures to investigate the emission efficiencies of near-band-edge (NBE), green and yellow luminescence bands. The NBE intensity depends linearly on the electron beam excitation as expected for excitonic recombination character. The intensities of the green and yellow bands are highly dependent not only on the excitation density but also on temperature. At high excitation densities ZnO exhibits dominant green emission at room temperature; the intensity of the green band can be further controlled by doping ZnO with hydrogen, which passivates green luminescence centers. Conversely at small excitation densities (< 0.1 nA) and low temperatures the visible luminescence from ZnO is predominantly yellow due to the abundance of Li in hydrothermal ZnO. The results are explained by differences in the recombination kinetics and the relative concentrations of the green and yellow centers, and illustrate that single-color emission can be achieved in ZnO by adjusting the excitation power and temperature. © 2014 Published by Elsevier B.V. All rights reserved.	en_US
dc.relation.ispartof	Journal of Luminescence	en_US
dc.relation.isbasedon	10.1016/j.jlumin.2014.05.014	en_US
dc.subject.classification	Applied Physics	en_US
dc.title	Controlling the visible luminescence in hydrothermal ZnO	en_US
dc.type	Journal Article
utslib.citation.volume	154	en_US
utslib.for	0306 Physical Chemistry (incl. Structural)	en_US
utslib.for	0205 Optical Physics	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access
pubs.publication-status	Published	en_US
pubs.volume	154	en_US

Abstract:

Cathodoluminescence spectra have been measured in hydrothermal and hydrogen-doped ZnO at different excitation densities and temperatures to investigate the emission efficiencies of near-band-edge (NBE), green and yellow luminescence bands. The NBE intensity depends linearly on the electron beam excitation as expected for excitonic recombination character. The intensities of the green and yellow bands are highly dependent not only on the excitation density but also on temperature. At high excitation densities ZnO exhibits dominant green emission at room temperature; the intensity of the green band can be further controlled by doping ZnO with hydrogen, which passivates green luminescence centers. Conversely at small excitation densities (< 0.1 nA) and low temperatures the visible luminescence from ZnO is predominantly yellow due to the abundance of Li in hydrothermal ZnO. The results are explained by differences in the recombination kinetics and the relative concentrations of the green and yellow centers, and illustrate that single-color emission can be achieved in ZnO by adjusting the excitation power and temperature. © 2014 Published by Elsevier B.V. All rights reserved.

Please use this identifier to cite or link to this item:

http://hdl.handle.net/10453/32779