Flexible piezoelectric nanogenerators based on ZnO nanorods grown on common paper substrates

Yu Qiu; Heqiu Zhang; Lizhong Hu; Dechao Yang; Lina Wang; Bin Wang; Jiuyu Ji; Guoqiang Liu; Xin Liu; Jianfan Lin; Fei Li; Shijun Han

doi:10.1039/C2NR31031G

Flexible piezoelectric nanogenerators based on ZnO nanorods grown on common paper substrates†

Yu Qiu,^a Heqiu Zhang,*^a Lizhong Hu,^a Dechao Yang,^a Lina Wang,^a Bin Wang,^a Jiuyu Ji,^a Guoqiang Liu,^a Xin Liu,^a Jianfan Lin,^a Fei Li^a and Shijun Han^a

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* Corresponding authors

^a School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian, People's Republic of China
E-mail: hqzhang@dlut.edu.cn

Abstract

Nanogenerators capable of harvesting energy from environmental mechanical energy are attractive for many applications. In this paper, we present a simple, low-cost approach to convert low-frequency mechanical energy into electric power using piezoelectric ZnO nanorods grown on a common paper substrate. This energy conversion device has ultrahigh flexibility and piezoelectric sensitivity and can produce an output voltage of up to 10 mV and an output current of about 10 nA. It is demonstrated that the device's electric output behavior can be optionally changed between four types of mode simply by controlling the straining rate. Furthermore, it is also shown that the electric output can be enhanced by scaling the size of the device. This energy-harvesting technology provides a simple and cost-effective platform to capture low-frequency mechanical energy, such as body movements, for practical applications.

Nanoscale

Flexible piezoelectric nanogenerators based on ZnO nanorods grown on common paper substrates†

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