dc.contributor.author |
Mhlongo, Gugu H
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dc.contributor.author |
Ntwaeaborwa, OM
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dc.contributor.author |
Swart, HC
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dc.contributor.author |
Kroon, RE
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dc.contributor.author |
Solarz, P
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dc.contributor.author |
Ryba-Romanowski, W
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dc.contributor.author |
Hillie, KT
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dc.date.accessioned |
2012-03-02T12:26:38Z |
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dc.date.available |
2012-03-02T12:26:38Z |
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dc.date.issued |
2011-08 |
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dc.identifier.citation |
Mhlongo, GH, Ntwaeaborwa, OM, Swart, HC, Kroon, RE, Solarz, P, Ryba-Romanowski, W and Hillie, KT. 2011. Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation. The Journal of Physical Chemistry C, vol. 115(36), pp 17625–17632 |
en_US |
dc.identifier.issn |
1932-7447 |
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dc.identifier.uri |
http://pubs.acs.org/doi/abs/10.1021/jp201142d
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dc.identifier.uri |
http://hdl.handle.net/10204/5626
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dc.description |
Copyright: 2011 American Chemical Society. This is an ABSTRACT ONLY. |
en_US |
dc.description.abstract |
Green-emitting ZnO nanoparticles were successfully embedded in Pr3+-doped SiO2 by a sol–gel method resulting in a red-emitting ZnO·SiO2:Pr3+ nanocomposite phosphor. The particle morphology and luminescent properties of SiO2:Pr3+ phosphor powders, with or without ZnO nanoparticles, were, respectively, investigated by electron microscopy and luminescence spectroscopy. Luminescence of SiO2:Pr3+ was studied as a function of different Pr3+ concentrations and temperature. Both Pr3+ concentration and temperature were found to influence the 1D2 emission from Pr3+ strongly. Defects emission from ZnO nanoparticles was measured at 517 nm compared with the normal peak at 470 nm from micrometer-sized ZnO powders. Only red emission at 614 nm from Pr3+ ions in SiO2:Pr3+ and ZnO·SiO2:Pr3+ was observed. The green emission from ZnO in ZnO·SiO2:Pr3+ was quenched, and the red emission from Pr3+ was doubly enhanced compared with SiO2:Pr3+. The enhancement of the PL intensity from SiO2:Pr3+ with ZnO incorporation denotes the presence of energy transfer from ZnO to Pr3+ ions. |
en_US |
dc.language.iso |
en |
en_US |
dc.publisher |
American Chemical Society (ACS) |
en_US |
dc.relation.ispartofseries |
Workflow;7886 |
|
dc.subject |
ZnO nanoparticles |
en_US |
dc.subject |
Green-emitting ZnO nanoparticles |
en_US |
dc.title |
Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Mhlongo, G. H., Ntwaeaborwa, O., Swart, H., Kroon, R., Solarz, P., Ryba-Romanowski, W., & Hillie, K. (2011). Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation. http://hdl.handle.net/10204/5626 |
en_ZA |
dc.identifier.chicagocitation |
Mhlongo, Gugu H, OM Ntwaeaborwa, HC Swart, RE Kroon, P Solarz, W Ryba-Romanowski, and KT Hillie "Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation." (2011) http://hdl.handle.net/10204/5626 |
en_ZA |
dc.identifier.vancouvercitation |
Mhlongo GH, Ntwaeaborwa O, Swart H, Kroon R, Solarz P, Ryba-Romanowski W, et al. Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation. 2011; http://hdl.handle.net/10204/5626. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mhlongo, Gugu H
AU - Ntwaeaborwa, OM
AU - Swart, HC
AU - Kroon, RE
AU - Solarz, P
AU - Ryba-Romanowski, W
AU - Hillie, KT
AB - Green-emitting ZnO nanoparticles were successfully embedded in Pr3+-doped SiO2 by a sol–gel method resulting in a red-emitting ZnO·SiO2:Pr3+ nanocomposite phosphor. The particle morphology and luminescent properties of SiO2:Pr3+ phosphor powders, with or without ZnO nanoparticles, were, respectively, investigated by electron microscopy and luminescence spectroscopy. Luminescence of SiO2:Pr3+ was studied as a function of different Pr3+ concentrations and temperature. Both Pr3+ concentration and temperature were found to influence the 1D2 emission from Pr3+ strongly. Defects emission from ZnO nanoparticles was measured at 517 nm compared with the normal peak at 470 nm from micrometer-sized ZnO powders. Only red emission at 614 nm from Pr3+ ions in SiO2:Pr3+ and ZnO·SiO2:Pr3+ was observed. The green emission from ZnO in ZnO·SiO2:Pr3+ was quenched, and the red emission from Pr3+ was doubly enhanced compared with SiO2:Pr3+. The enhancement of the PL intensity from SiO2:Pr3+ with ZnO incorporation denotes the presence of energy transfer from ZnO to Pr3+ ions.
DA - 2011-08
DB - ResearchSpace
DP - CSIR
KW - ZnO nanoparticles
KW - Green-emitting ZnO nanoparticles
LK - https://researchspace.csir.co.za
PY - 2011
SM - 1932-7447
T1 - Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation
TI - Luminescence dependence of Pr3+ activated SiO2 nanophosphor on Pr3+ concentration, temperature, and ZnO incorporation
UR - http://hdl.handle.net/10204/5626
ER -
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en_ZA |