Lead-Free NaNbO3 Nanowires for a High Output Piezoelectric Nanogenerator

被引：420

作者：

Jung, Jong Hoon ^{[1
,2
]}

Lee, Minbaek ^{[1
]}

Hong, Jung-Il ^{[1
]}

Ding, Yong ^{[1
]}

Chen, Chih-Yen ^{[1
,3
]}

Chou, Li-Jen ^{[3
]}

Wang, Zhong Lin ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[2] Inha Univ, Dept Phys, Inchon 402751, South Korea

[3] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 30313, Taiwan

来源：

ACS NANO | 2011年 / 5卷 / 12期

基金：

新加坡国家研究基金会;

关键词：

lead-free; NaNbO3; nanowire; high output; piezoelectric nanogenerator; PHASE;

D O I：

10.1021/nn2039033

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Perovskite ferroelectric nanowires have rarely been used for the conversion of tiny mechanical vibrations into electricity, in spite of their large piezoelectricity. Here we present a lead-free NaNbO3 nanowire-based piezoelectric device as a high output and cost-effective flexible nanogenerator. The device consists of a NaNbO3 nanowire poly(dimethylsiloxane)(PDMS) polymer composite and Au/Cr-coated polymer films. High-quality NaNbO3 nanowires can be grown by hydrothermal method at low temperature and can be poled by an electric field at room temperature. The NaNbO3 nanowire PDMS polymer composite device shows an output voltage of 3.2 V and output current of 72 nA (current density of 16 nA/cm(2)) under a compressive strain of 0.23%. These results imply that NaNbO3 nanowires should be quite useful for large-scale lead-free piezoelectric nanogenerator applications.

引用

页码：10041 / 10046

页数：6

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