Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 116, Issue 16, Pages 9351-9355Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp301527y
Keywords
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Funding
- National Science Council of the Republic of China, Taiwan [NSC 100-2221-E-024-011]
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The well-aligned and vertical ZnO nanowires were grown on PET substrates by the hydrothermal method. The novel piezoelectric nanogenerator was fabricated from ZnO nanowires and a Pt/ZnO nanowire electrode on a flexible PET substrate. A sample was compressed and bent generating internal stress in the PET substrate, which output a current of approximately 5 x 10(-10) A without a source of vibration. The sample with 2% bending was also measured with vibration at a low frequency, yielding a maximum piezoelectric current of about 2.5 x 10(-7) A, which is 4 times the current of a nonbending sample. These results demonstrate that a little bending of a flexible substrate improves piezoelectric performance.
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