Control of lateral dimension in metal-catalyzed germanium nanowire growth: usage of carbon sheath.
Nano Lett
; 12(8): 4007-12, 2012 Aug 08.
Article
en En
| MEDLINE
| ID: mdl-22823001
We report on the catalytic growth of thin carbon sheathed single crystal germanium nanowires (GeNWs), which can solve the obstacles that have disturbed a wide range of applications of GeNWs. Single crystal Ge NW core and amorphous carbon sheath are simultaneously grown via vapor-liquid-solid (VLS) process. The carbon sheath completely blocks unintentional vapor deposition on NW surface, thus ensuring highly uniform diameter, dopant distribution, and electrical conductivity along the entire NW length. Furthermore, the sheath not only inhibits metal diffusion but also improves the chemical stability of GeNWs at even high temperatures.
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Nano Lett
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2012
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Article