Journal
SMALL
Volume 3, Issue 5, Pages 722-756Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smll.200600727
Keywords
heterojunctions; nanorods; nanostructures; nanowires; one-dimensional (1D)
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There are a variety of methods for synthesizing or fabricating one dimensional (ID) nanostructures containing heterojunctions between different materials. Here we review recent developments in the synthesis and fabrication of heterojunctions formed between different materials within the same ID nanostructure or between different ID nanostructures composed of different materials. Structures containing ID nanoscale heterojunctions exhibit interesting chemistry as well as size, shape, and material-dependent properties that are unique when compared to single-component materials. This leads to new or enhanced properties or multifunctionality useful for a variety of applications in electronics, photonics, catalysis, and sensing, for example. This review separates the methods into vapor-phase synthesis, solution-phase synthesis, template-based synthesis, and other approaches, such as lithography, electrospinning, and assembly. These methods are used to form a variety of heterojunctions, including segmented, core/shell, branched, or crossed, from different combinations of semiconductor, metal, carbon, and polymeric materials.
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