Nanogenerator made of ZnO nanosheet networks


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Publication Details

Author list: Zhang, Renyun

Publisher: Institute of Physics (IOP)

Publication year: 2017

ISSN: 0268-1242

DOI: http://dx.doi.org/10.1088/1361-6641/aa660c

URL: http://iopscience.iop.org/article/10.1088/1361-6641/aa660c/meta


The piezoelectricity of nanomaterials attracts a great deal of attention due to its broad application, including the harvesting of ambient mechanical energy to power small electronics devices. We report here a simple method to fabricate piezoelectric nanogenerators consisting of networks of ZnO nanosheets grown on aluminum (Al) foils, where the Al acts as both a substrate for growth and as an electrode contacting the ZnO network. A second, top electrode was tapped, rolled, or rubbed against the ZnO to generate piezoelectricity. This second electrode was either a copper foil or fluorine doped tin oxide (FTO) glass. A piezo voltage of up to 0.924 V was detected during rolling and 6 µA was the highest current observed when rubbing the ZnO film with a FTO glass. Due to its simplicity, this nanogenerator fabrication method has the potential to be scaled up for the industrial production of piezoelectric energy harvesting devices.


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