期刊
PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
卷 8, 期 5, 页码 414-419出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/pssr.201409105
关键词
GaN nanowires; piezoelectricity; piezogenerators; energy harvesting; atomic force microscopy
We demonstrate the high potential of GaN nanowires (NWs) to convert mechanical energy into electric energy. Using an atomic force microscope equipped with a Resiscope module, an average output voltage of -74 mV and a maximum of -443 mV +/- 2% per NW were measured. This latter value is the highest reported so far for GaN NWs. By considering these output signals, we have estimated an average and a maximum power density generated by one layer of GaN NWs of the order of 5.9 mW/cm(2) and 130 mW/cm(2), respectively. These results offer promising prospects for the use of GaN NWs for high-efficiency ultracompact piezogenerators. ((c) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
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