UVicSpace

Lanthanide-doped nanoparticles in sol-gel matrices: improved optical properties and new opportunities

Show simple item record

dc.contributor.author Sivakumar, Sri
dc.date.accessioned 2010-03-02T17:17:11Z
dc.date.available 2010-03-02T17:17:11Z
dc.date.copyright 2006 en
dc.date.issued 2010-03-02T17:17:11Z
dc.identifier.uri http://hdl.handle.net/1828/2290
dc.description.abstract This thesis describes the incorporation of lanthanide-doped nanoparticles into sol-gel matrices to improve the optical properties of lanthanide ions and these materials can potentially be used in white light devices, optical amplifiers. lasers. and biolabeling. Bright white light has been generated from sol-gel thin films (SiO2 and ZrO2) made with lanthanide-doped nanoparticles through up-conversion of a single 980 nm light source. The up-conversion mechanisms involved in the generation of light has been discussed. A new and potentially efficient up-conversion process named cross-relaxation-enhanced energy-transfer (CREET) up-conversion process has been described. Preparation of semiconductor sol-gel thin films with lanthanide-doped nanoparticles has been discussed and they show energy transfer from the semiconductor matrix to the lanthanide ions. The preparation and bioconjugation of nearly monodisperse (40 nm) silica-coated LaF3:Ln3 nanoparticles has been described. en
dc.language English eng
dc.language.iso en en
dc.rights Available to the World Wide Web en
dc.subject rare earth metals en
dc.subject optical properties en
dc.subject.lcsh UVic Subject Index::Sciences and Engineering::Chemistry en
dc.title Lanthanide-doped nanoparticles in sol-gel matrices: improved optical properties and new opportunities en
dc.type Thesis en
dc.contributor.supervisor van Veggel, Frank C.J.M.
dc.degree.department Dept. of Chemistry en
dc.degree.level Doctor of Philosophy Ph.D. en


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search UVicSpace


Browse

My Account

Statistics

Help