Selective Epitaxial Growth on Germanium Nanowires via Hybrid Oxide-Stabilized/Vapor–Liquid–Solid Growth

Autor:	Christopher J. Hawley, Jonathan E. Spanier, Terrence McGuckin
Rok vydání:	2013
Předmět:	Materials science Nanowire Nucleation Oxide chemistry.chemical_element Germanium General Chemistry Condensed Matter Physics Epitaxy Catalysis chemistry.chemical_compound chemistry Chemical engineering Deposition (phase transition) General Materials Science Vapor–liquid–solid method
Zdroj:	Crystal Growth & Design. 13:491-496
ISSN:	1528-7505 1528-7483
DOI:	10.1021/cg3016595
Popis:	The introduction low levels of oxygen during the vapor–liquid–solid growth (VLS) of germanium nanowires causes an oxide sheath to form at the catalyst/nanowire/vapor interface during growth. This results in extremely high aspect ratio nanowires due to the removal of homoepitaxial deposition and the finite energy required for heterogeneous nucleation of germanium on its oxide. With the removal of oxygen, the catalyzed oxide sheath terminates and conventional growth with finite sidewall deposition dominates subsequent growth. The successful transition between oxide-stabilized and conventional VLS regimes can be deliberately manipulated to grow finite conical nanowire segments with discontinuous changes in diameter.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::8f5e5b85178b099f0ba257a005615173 https://doi.org/10.1021/cg3016595 Zobrazit plný text záznamu