Lithium-Doped Zinc Oxide Nanowires鈥揚olymer Composite for High Performance Flexible Piezoelectric Nanogenerator
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- 作者：Sung-Ho Shin ; Young-Hwan Kim ; Min Hyung Lee ; Joo-Yun Jung ; Jae Hun Seol ; Junghyo Nah
- 刊名：ACS Nano
- 出版年：2014
- 出版时间：October 28, 2014
- 年：2014
- 卷：8
- 期：10
- 页码：10844-10850
- 全文大小：540K
- ISSN：1936-086X
文摘
We present a method to develop high performance flexible piezoelectric nanogenerators (NGs) by employing Li-doped ZnO nanowires (NWs). We synthesized Li-doped ZnO NWs and adopted them to replace intrinsic ZnO NWs with a relatively low piezoelectric coefficient. When we exploited the ferroelectric phase transition induced in Li-doped ZnO NWs, the performance of the NGs was significantly improved and the NG fabrication process was greatly simplified. In addition, our approach can be easily expanded for large-scale NG fabrication. Consequently, the NGs fabricated by our simple method exhibit the excelling output voltage and current, which are stable and reproducible during periodic bending/releasing measurement over extended cycles. In addition, output voltage and current up to 鈭?80 V and 鈭?0 渭A, respectively, were obtained in the large-scale NG. The approach introduced here extends the performance limits of ZnO-based NGs and their potentials in practical applications.