School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, USA.
Nano Lett. 2010 Aug 11;10(8):3151-5. doi: 10.1021/nl101973h.
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 approximately 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.
我们在这里报告了一种简单而有效的方法，称为可扩展的扫印法，用于制造灵活的高输出纳米发电机（HONG），可有效收集机械能以驱动小型商用电子元件。该技术由两个主要步骤组成。在第一步中，将垂直排列的氧化锌纳米线（NWs）转移到接收衬底上，以形成水平排列的阵列。然后，沉积平行条纹型电极以将所有 NWs 连接在一起。使用单层 HONG 结构，可获得高达 2.03 V 的开路电压和约 11 mW/cm(3) 的峰值输出功率密度。所产生的电能可通过利用电容器有效地存储，并且成功地用于点亮商用发光二极管（LED），这是朝着通过从环境中收集能量来构建自供电设备迈出的重要一步。这项研究为基于纳米线的压电纳米发电机在自供电纳米系统中的实际应用开辟了道路。
