Journal
NANOTECHNOLOGY
Volume 28, Issue 44, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6528/aa865d
Keywords
ZnO nanorods; flexible; piezoelectric nanogenerators
Funding
- Basic Science Research Program through the National Research Foundation of Korea, Ministry of Science, ICT and Future Planning of the Korean government [NRF-2014R1A2A1A11054154]
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We report on the fabrication of ZnO nanorod (NR)-based flexible piezoelectric nanogenerators (PENGs) on carbon paper (CP). Structural investigations indicate that the ZnO NRs grew well along the porous CP surface. Optical investigation shows that the crystal quality of the ZnO NRs on the CP was comparable to that of NRs grown on Si substrate. As the molar concentration increased from 10-70 mM, the output voltage and current increased consistently from 3.6-6.8 V and 0.79-1.45 mu A, respectively. The enhancements of the voltage and current were attributed to the enhanced accumulation of the potentials generated by the increased number of ZnO NRs in the PENG devices. Therefore, the porous CP enhanced the PENG performance due to the higher surface area, and provided a super-flexible self-powering platform.
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