4.4 Article

Large scale synthesis of silicon nanowires

期刊

JOURNAL OF NANOPARTICLE RESEARCH
卷 13, 期 4, 页码 1737-1745

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SPRINGER
DOI: 10.1007/s11051-010-9928-z

关键词

Nanowires; Large scale synthesis; Silicon; Nanotechnology; Nanomanufacturing

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Artificial nanostructures (Samuelson et al., Physica E 21:560-567, 2004; Xia et al., Adv Mater 15:353-389, 2003) show promise for the organization of functional materials (Huck and Samuelson, Nanotechnology 14:NIL_5-NIL_8, 2003) to create nanoelectronic (Mizuta and Oda, Science 279:208-211, 2008) or nano-optical devices (Mazur et al.; Tanemura et al., Synthesis, Optical Properties and Functional Applications of ZnO Nano-materials: A Review, 1-3:58-63, 2008). However, in most manufacturing recipes described so far, nanostructures are synthesized in solution and/or uncontrolled deposition results in random arrangements; this makes it difficult to measure the properties of attached nanodevices or to integrate them with conventionally fabricated microcircuitry. Here, we describe a fully CMOS compatible process technology for mass manufacture of polysilicon nanowires by the CVD (chemical vapor deposition) method. The large scale production of nanowires could successfully be synthesized on silicon (100) substrates. However, the method presented here can successfully be employed with all technologically useful substrates with good adhesion for silicon such as SiO(2), diamond-like carbon or III-V semiconductors. This opens up the possibility for the fabrication of strain-sensitive and defect-sensitive optoelectronic devices on the optimum III-V substrate (Fonstad et al.). Finally, scanning electron microscopy (SEM) was used to characterize the as-synthesized nanowires and energy-filtered transmission electron microscopy (EFTEM) and scanning transmission electron microscopy (STEM) analysis were used to determine the nanowire composition.

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