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Pàgina inicial > Articles > Articles publicats > Colloidal Silicon-Germanium Nanorod Heterostructures |
Data: | 2017 |
Resum: | Colloidal nanorods with axial Si and Ge heterojunction segments were produced by solution-liquid-solid (SLS) growth using Sn as a seed metal and trisilane and diphenylgermane as Si and Ge reactants. The low solubility of Si and Ge in Sn helps to generate abrupt Si-Ge heterojunction interfaces. To control the composition of the nanorods, it was also necessary to limit an undesired side reaction between the Ge reaction byproduct tetraphenylgermane and trisilane. High-resolution transmission electron microscopy reveals that the Si-Ge interfaces are epitaxial, which gives rise to a significant amount of bond strain resulting in interfacial misfit dislocations that nucleate stacking faults in the nanorods. |
Ajuts: | Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 Ministerio de Economía y Competitividad SEV-2013-0295 |
Drets: | Tots els drets reservats. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió acceptada per publicar |
Matèria: | Colloidal nanorods ; Diphenylgermane ; Interfacial misfit dislocations ; Liquid solids ; Reaction byproducts ; Si-Ge heterojunction ; Side reactions ; Silicon Germanium |
Publicat a: | Chemistry of materials, Vol. 29, Issue 22 (November 2017) , p. 9786-9792, ISSN 1520-5002 |
Postprint 25 p, 779.1 KB |