Pyroelectric Nanogenerators for Driving Wireless Sensors

被引：217

作者：

Yang, Ya ^{[1
]}

Wang, Sihong ^{[1
]}

Zhang, Yan ^{[2
]}

Wang, Zhong Lin ^{[1
,2
]}

机构：

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

[2] Chinese Acad Sci, Beijing Inst Nanoenergy & Nanosyst, Beijing, Peoples R China

来源：

NANO LETTERS | 2012年 / 12卷 / 12期

基金：

美国国家科学基金会;

关键词：

Pyroelectric effect; nanogenerators; PZT; self-powered nanosystems; ENERGY-CONVERSION; STORAGE; DRIVEN;

D O I：

10.1021/nl303755m

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We demonstrate a pyroelectric nanogenerator (PENG) based on a lead zirconate titanate (PZT) film, which has a pyroelectric coefficient of about 80 nC/cm(2)K. For a temperature change of 45 K at a rate of 0.2 K/s, the output open-circuit voltage and short-circuit current density of the PENG reached 22 V and 171 nA/cm(2), respectively, corresponding to a maximum power density of 0.215 mW/cm(3). A detailed theory was developed for understanding the high output voltage of PENG. A single electrical output pulse can directly drive a liquid crystal display (LCD) for longer than 60 s. A Li-ion battery was charged by the PENG at different working frequencies, which was used to drive a green light-emitting diode (LED). The demonstrated PENG shows potential applications in wireless sensors.

引用

页码：6408 / 6413

页数：6

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