The investigation of rare earth-doped nanomaterials in various hosts
This work investigates the synthesis of bifunctional nanomaterials using the doping of paramagnetic GdF3 and GdPO4, and weakly paramagnetic CaYF5 nanoparticles with Yb3+ and Er3+, via a hydrothermal synthesis method. The nanoparticles produced were investigated for fluorescent properties that were b...
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| Format: | Final Year Project |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10356/39372 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | This work investigates the synthesis of bifunctional nanomaterials using the doping of paramagnetic GdF3 and GdPO4, and weakly paramagnetic CaYF5 nanoparticles with Yb3+ and Er3+, via a hydrothermal synthesis method. The nanoparticles produced were investigated for fluorescent properties that were both up- and down-converting in nature, while also prepared for further characterisation of their magnetic and structural properties.
GdF3 nanoparticles were used as a provider of magnetic properties while Yb3+ and Er3+ ions were used to provide fluorescence. Despite the strong fluorescence that was expected of the Yb3+, Er3+ ions, significant characteristic peaks were not observed from the emission spectra of the CaYF5:(Yb, Er) samples, possibly because of fluorescence quenching due to Ca. A reasonably good degree of fluorescence was observed for the GdF3:(Yb, Er) samples, but not all samples were well dispersed in hexane. |
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