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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Arnold, Polly L. Weinstein, Julia A. Phillips, Andrew Sujecki, Slawomir Ali, Mohammad I. Oladeji, Ayodele Sazanovich, Igor V. |
| Copyright Year | 2013 |
| Abstract | Er-doped SiO2 powders were prepared by a simple and straightforward sol–gel method using tetraethoxysilane and erbium triflate as sources of SiO2 and Er2O3. Excitation with near-infrared 800 and 980 nm light initiated an energy up-conversion process in these materials, which resulted in the emission in the predominantly red and green parts of the spectrum. Laser power dependence of the intensity of the up-converted emission was studied both experimentally and by using a numerical model to understand the up-conversion mechanism. Excited state absorption (ESA) and five unique ion–ion energy transfer up-conversion (ETU) processes between the relevant levels are identified as possible mechanisms for the observed luminescence. The efficient NIR-visible upconversion was observed even at comparatively low powers of 200 mW cm−2. |
| Starting Page | 8075 |
| Ending Page | 8085 |
| Page Count | 11 |
| File Format | HTM / HTML PDF |
| ISSN | 20507526 |
| Volume Number | 1 |
| Issue Number | 48 |
| Journal | Journal of Materials Chemistry C |
| DOI | 10.1039/c3tc31601g |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Tetraethyl orthosilicate Erbium Trifluoromethanesulfonate Correlation and dependence European Space Agency Luminescence |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Materials Chemistry |
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