Journal
MATERIALS SCIENCE & ENGINEERING R-REPORTS
Volume 64, Issue 3-4, Pages 33-71Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.mser.2009.02.001
Keywords
ZnO; Nanowire; Nanobelts; Nanospring; Nanoring; Nanogenerator; Nanopiezotronics; Nanosensor; Nanolaser; LED; Solar cell
Funding
- DARPA
- NSF
- DOE
- NASA
- NIH
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Semiconducting zinc oxide nanowires (NWs) and nanobelts (NBs) are a unique group of quasi-one-dimensional nanomaterial. This review mainly focuses on the rational synthesis, structure analysis, novel properties and unique applications of zinc oxide NWs and NBs in nanotechnology. First, we will discuss rational design of synthetic strategies and the synthesis of NWs via vapor phase and chemical growth approaches. Secondly, the vapor-solid process for synthesis of oxide based nanostructures will be described in details. We will illustrate the polar surface dominated growth phenomena, such as the formation of nanosprings, nanorings and nanohelices of single-crystal zinc oxide. Third, we will describe the unique and novel electrical, optoelectronic, field emission, and mechanical properties of individual NWs and NBs. Finally, we will illustrate some novel devices and applications made using NWs as ultra-sensitive chemical and biological nanosensors. solar cell, light emitting diodes, nanogenerators, and nano-piezotronic devices. ZnO is ideal for nanogenerators for converting nano-scale mechanical energy into electricity owing to its coupled piezoelectric and semiconductive properties. The devices designed based on this Coupled characteristic are the family of piezotronics, which is a new and unique group of electronic components that are controlled by external forces/pressure. (C) 2009 Elsevier B.V. All rights reserved
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