ResearchSpace

Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors

Show simple item record

dc.contributor.author Mhlongo, Gugu H
dc.contributor.author Dhlamini, MS
dc.contributor.author Swart, HC
dc.contributor.author Ntwaeaborwa, OM
dc.contributor.author Hillie, KT
dc.date.accessioned 2012-03-02T09:13:18Z
dc.date.available 2012-03-02T09:13:18Z
dc.date.issued 2011-08
dc.identifier.citation Mhlongo, GH, Dhlamini, MS, Swart, HC, Ntwaeaborwa, OM and Hillie, KT. 2011. Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors. Optical Materials, vol. 33(10), pp 1495-1499 en_US
dc.identifier.issn 0925-3467
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/S0925346711001303
dc.identifier.uri http://hdl.handle.net/10204/5624
dc.description Copyright: 2011 Elsevier. This is an ABSTRACT ONLY. en_US
dc.description.abstract Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphor powders with different concentrations of Eu3+ ions were synthesized by a sol–gel method and their luminescence properties were investigated. The red photoluminescence (PL) from Eu3+ ions with the main emission peak at 612 nm was observed to increase with Eu3+ concentration from 0.25 to 0.75 mol% and decreased notably when the concentration was increased to 1 mol%. The decrease in the PL intensity at higher Eu3+ concentrations can be associated with concentration quenching effects. The red emission at 612 nm was shown to increase considerable when ZnO nanoparticles were incorporated in Y2O3:Eu3+ while green emission from ZnO was suppressed. The increase is attributed to energy transfer from ZnO to Eu3+. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;7876
dc.relation.ispartofseries Workflow;8119
dc.subject Phosphors en_US
dc.subject Concentration quenching effect en_US
dc.subject Energy transfer en_US
dc.title Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors en_US
dc.type Article en_US
dc.identifier.apacitation Mhlongo, G. H., Dhlamini, M., Swart, H., Ntwaeaborwa, O., & Hillie, K. (2011). Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors. http://hdl.handle.net/10204/5624 en_ZA
dc.identifier.chicagocitation Mhlongo, Gugu H, MS Dhlamini, HC Swart, OM Ntwaeaborwa, and KT Hillie "Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors." (2011) http://hdl.handle.net/10204/5624 en_ZA
dc.identifier.vancouvercitation Mhlongo GH, Dhlamini M, Swart H, Ntwaeaborwa O, Hillie K. Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors. 2011; http://hdl.handle.net/10204/5624. en_ZA
dc.identifier.ris TY - Article AU - Mhlongo, Gugu H AU - Dhlamini, MS AU - Swart, HC AU - Ntwaeaborwa, OM AU - Hillie, KT AB - Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphor powders with different concentrations of Eu3+ ions were synthesized by a sol–gel method and their luminescence properties were investigated. The red photoluminescence (PL) from Eu3+ ions with the main emission peak at 612 nm was observed to increase with Eu3+ concentration from 0.25 to 0.75 mol% and decreased notably when the concentration was increased to 1 mol%. The decrease in the PL intensity at higher Eu3+ concentrations can be associated with concentration quenching effects. The red emission at 612 nm was shown to increase considerable when ZnO nanoparticles were incorporated in Y2O3:Eu3+ while green emission from ZnO was suppressed. The increase is attributed to energy transfer from ZnO to Eu3+. DA - 2011-08 DB - ResearchSpace DP - CSIR KW - Phosphors KW - Concentration quenching effect KW - Energy transfer LK - https://researchspace.csir.co.za PY - 2011 SM - 0925-3467 T1 - Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors TI - Dependence of photoluminescence (PL) emission intensity on Eu3+ and ZnO concentrations in Y2O3:Eu3+ and ZnO·Y2O3:Eu3+ nanophosphors UR - http://hdl.handle.net/10204/5624 ER - en_ZA


Files in this item

Thumbnail
Name: Mhlongo_2011_ABSTRACT ...
Size: 183.7Kb
Format: PDF
View/Open

This item appears in the following Collection(s)

Show simple item record