Stokes and anti-Stokes blue light emissions of thermal-evaporated silica sub-micron wires
文献类型：期刊论文
| 作者 | C. Y. Tao ; X. M. Li ; W. L. Feng ; J. C. Yang ; W. L. Li ; Y. F. Li ; W. J. Yang |
| 刊名 | Physica Status Solidi a-Applications and Materials Science
 |
| 出版日期 | 2011 |
| 卷号 | 208期号:2页码:466-470 |
| 关键词 | nanowires photoluminescence silica thermal evaporation upconversion transfer up-conversion photoluminescence properties nanowire growth deposition mechanism pressure dioxide centers lasers |
| ISSN号 | 1862-6300 |
| 中文摘要 | Based on the thermal evaporation of silicon monoxide at high temperature, an improved method has been developed for large-scale synthesis of ultralong amorphous silica sub-micron wires using polished p-Si wafers as substrates. The synthesis was done with and without thermite. The morphology and structure of the silica wires was investigated through field-emission scanning electron microscope equipped with energy dispersive X-ray spectroscopy, and X-ray diffractometer. Almost uniform sub-micron wires with average diameters of 300 nm and length up to hundreds of micrometers were obtained in presence of thermite while sub-micron wires with many curved segments were obtained in absence of the thermite. Both forms of silica wires emitted blue lights at 478 nm (similar to 2.6 eV) under excitation at 351 nm (similar to 3.5 eV), while intense anti-Stokes blue emissions at 464 nm(similar to 2.7 eV) were observed under the 694 nm(similar to 1.8 eV) excitation due to the upconversion effect. This effect is associated with defect centers arising from high oxygen deficiency. The emissions from oxygen deficiency centers might be caused by multistep energy transfer from nonbridging oxygen hole centers to oxygen deficiency centers. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/30707]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | C. Y. Tao,X. M. Li,W. L. Feng,et al. Stokes and anti-Stokes blue light emissions of thermal-evaporated silica sub-micron wires[J]. Physica Status Solidi a-Applications and Materials Science,2011,208(2):466-470. |
| APA | C. Y. Tao.,X. M. Li.,W. L. Feng.,J. C. Yang.,W. L. Li.,...&W. J. Yang.(2011).Stokes and anti-Stokes blue light emissions of thermal-evaporated silica sub-micron wires.Physica Status Solidi a-Applications and Materials Science,208(2),466-470. |
| MLA | C. Y. Tao,et al."Stokes and anti-Stokes blue light emissions of thermal-evaporated silica sub-micron wires".Physica Status Solidi a-Applications and Materials Science 208.2(2011):466-470. |
入库方式： OAI收割
来源：金属研究所
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