Metallic and Ionic Fe Induced Growth of Si−SiOx Core−Shell Nanowires
| Autor: | Xin-Ju Yang, Jiu-Zhan Zhang, Yueqin Wu, Zuimin Jiang, Jin Zou, Tianxiao Nie, Zhigang Chen, Jia-Le Wang, Yongliang Fan |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Materials science
Alloy Nanowire Ionic bonding Nanotechnology Chemical vapor deposition engineering.material Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amorphous solid Metal General Energy Chemical engineering visual_art visual_art.visual_art_medium engineering Wafer Physical and Theoretical Chemistry Vapor–liquid–solid method |
| Zdroj: | The Journal of Physical Chemistry C. 114:15370-15376 |
| ISSN: | 1932-7455 1932-7447 |
| DOI: | 10.1021/jp105952m |
| Popis: | Si−SiOx core−shell nanowires with a length of hundreds of micrometers and average diameters of 40−90 nm were fabricated by directly heating Si wafers coated with metallic Fe. These novel core−shell nanowires have a diamond structure for their ultrathin Si cores with a diameter of 5−8 nm aligned along the ⟨111⟩ growth directions inside much thicker amorphous SiOx shells. A new temperature-dependent alloy, metallic and ionic Fe (Fe−FeOx), catalyzed solid−liquid−solid mechanism is proposed to explain the growth of Si−SiOx core−shell nanowires based on both the synthesis conditions and microstructural characterizations. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|