期刊
NANO LETTERS
卷 10, 期 8, 页码 3151-3155出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl101973h
关键词
Nanogenerator; ZnO; nanowire; light-emitting diode; self-powering
类别
资金
- NSF [DMS 0706436, CMMI 0403671, ENG/CMMI 112024]
- DARPA
- BES DOE [DE-FG02-07ER46394]
- DARPA/ARO [W911NF-08-1-0249]
We report here a simple and effective approach, named scalable sweeping-printing-method, for fabricating flexible high-output nanogenerator (HONG) that can effectively harvesting mechanical energy for driving a small commercial electronic component. The technique consists of two main steps. In the first step, the vertically aligned ZnO nanowires (NWs) are transferred to a receiving substrate to form horizontally aligned arrays. Then, parallel stripe type of electrodes are deposited to connect all of the NWs together. Using a single layer of HONG structure, an open-circuit voltage of up to 2.03 V and a peak output power density of similar to 11 mW/cm(3) have been achieved. The generated electric energy was effectively stored by utilizing capacitors, and it was successfully used to light up a commercial light-emitting diode (LED), which is a landmark progress toward building self-powered devices by harvesting energy from the environment. This research opens up the path for practical applications of nanowire-based piezoelectric nanogeneragtors for self-powered nanosystems.
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