完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Huang, Tung-Ching | en_US |
dc.contributor.author | Hsieh, Wen-Feng | en_US |
dc.date.accessioned | 2014-12-08T15:09:34Z | - |
dc.date.available | 2014-12-08T15:09:34Z | - |
dc.date.issued | 2009-05-01 | en_US |
dc.identifier.issn | 1053-0509 | en_US |
dc.identifier.uri | http://dx.doi.org/10.1007/s10895-008-0440-0 | en_US |
dc.identifier.uri | http://hdl.handle.net/11536/7305 | - |
dc.description.abstract | Under a 980 nm laser pumping, quenching of green upconversion (UC) emission accompanied with enhancement of red UC emission observed was dominated by the energy back-transfer (EBT) process in Er(3+) and Yb(3+) codoped PbTiO(3), BaTiO(3), and SrTiO(3) polycrystalline powders. The efficiency of the EBT process depends not only on Yb(3+) concentration but also on level match of the doped Er(3+) and Yb(3+) ions caused by the crystal fields with different symmetries. Our UC emission spectra and X-ray diffraction confirm that the centrosymmetric crystal field arising from reducing tetragonality causes level match of transition (4)S(3/2) -> (4) I(13/2) of Er(3+) and (2)F(7/2) -> (2) F(5/2) of Yb(3+). This level match is responsible for enhancing red UC emission. | en_US |
dc.language.iso | en_US | en_US |
dc.subject | Upconversion | en_US |
dc.subject | Fluorescence | en_US |
dc.subject | Rare-earth | en_US |
dc.subject | X-ray diffraction | en_US |
dc.subject | Crystal structure | en_US |
dc.title | Er-Yb Codoped Ferroelectrics for Controlling Visible Upconversion Emissions | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1007/s10895-008-0440-0 | en_US |
dc.identifier.journal | JOURNAL OF FLUORESCENCE | en_US |
dc.citation.volume | 19 | en_US |
dc.citation.issue | 3 | en_US |
dc.citation.spage | 511 | en_US |
dc.citation.epage | 516 | en_US |
dc.contributor.department | 光電工程學系 | zh_TW |
dc.contributor.department | Department of Photonics | en_US |
dc.identifier.wosnumber | WOS:000266481300015 | - |
dc.citation.woscount | 19 | - |
顯示於類別: | 期刊論文 |