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nversion luminescence from NaYF 4 : Yb , Er nanocrystals by Gd 3 + ions induced phase transformation and plasmonic Au nanosphere arrays †
| Content Provider | Semantic Scholar |
|---|---|
| Author | Wu, Yangqing Lin, Shaobing Shao, Wenyi Zhang, Xiaowei Yu, Linwei Chen, Kunji |
| Copyright Year | 2016 |
| Abstract | NaYF4:Yb,Er nanocrystals with different concentrations of Gd 3+ ions are prepared via a hydrothermal method. With increasing Gd dopant, up-conversion (UC) emission is gradually enhanced and the strongest UC emission is improved by 50-fold for a sample with 15% Gd doping compared with the one without Gd incorporation. However, further increasing the Gd dopant causes the reduction of UC emission which can be ascribed to the increased surface state recombination. Moreover, the selfassembly technique is used to fabricate Au nanosphere arrays with diameters of 300 nm to enhance the UC luminescence. It is found that the luminescence intensity is increased by 2-fold due to the surface plasmon resonance effect which is confirmed by the absorption spectra. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.escience.cn/system/download/92608 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
