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    Toward high output-power nanogenerator

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    2008_31_APL.pdf (354.0Kb)
    Date
    2008-04-29
    Author
    Liu, Jin
    Fei, Peng
    Zhou, Jun
    Tummala, Rao R.
    Wang, Z. L. (Zhong Lin)
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    Abstract
    In this paper, the factors that determine the power output of a piezoelectric nanowire (NW) nanogenerator (NG) have been analyzed. The output current is the sum of those contributed by all of the NWs while the output voltage is determined by the voltage generated by a single NW, the capacitance of the NW array and the system, and the contact resistance. By growing uniform ZnO NWs with diameters of ~100 nm and lengths of ~5 µm, the output current density and output voltage of the NG was improved to ~8.3 µA/cm² and 10 mV, respectively, which are 20–30 times higher than that we previously reported. A power generation density of ~83 nW/cm² is achieved by using a single layer NW NG.
    URI
    http://hdl.handle.net/1853/27471
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