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Issue 3, 2016
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A vanadium-doped ZnO nanosheets–polymer composite for flexible piezoelectric nanogenerators

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Abstract

We report high performance flexible piezoelectric nanogenerators (PENGs) by employing vanadium (V)-doped ZnO nanosheets (NSs) and the polydimethylsiloxane (PDMS) composite structure. The V-doped ZnO NSs were synthesized to overcome the inherently low piezoelectric properties of intrinsic ZnO. Ferroelectric phase transition induced in the V-doped ZnO NSs contributed to significantly improve the performance of the PENGs after the poling process. Consequently, the PENGs exhibited high output voltage and current up to ∼32 V and ∼6.2 μA, respectively, under the applied strain, which are sufficient to directly turn on a number of light emitting diodes (LEDs). The composite approach for PENG fabrication is scalable, robust, and reproducible during periodic bending/releasing over extended cycles. The approach introduced here extends the performance limits of ZnO-based PENGs and demonstrates their potential as energy harvesting devices.

Graphical abstract: A vanadium-doped ZnO nanosheets–polymer composite for flexible piezoelectric nanogenerators

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Supplementary files

Article information


Submitted
16 Oct 2015
Accepted
10 Dec 2015
First published
11 Dec 2015

Nanoscale, 2016,8, 1314-1321
Article type
Communication

A vanadium-doped ZnO nanosheets–polymer composite for flexible piezoelectric nanogenerators

S. Shin, Y. H. Kwon, M. H. Lee, J. Jung, J. H. Seol and J. Nah, Nanoscale, 2016, 8, 1314
DOI: 10.1039/C5NR07185B

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