School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0245, United States.
Nano Lett. 2012 Jun 13;12(6):3109-14. doi: 10.1021/nl300988z. Epub 2012 May 11.
Transparent, flexible and high efficient power sources are important components of organic electronic and optoelectronic devices. In this work, based on the principle of the previously demonstrated triboelectric generator, we demonstrate a new high-output, flexible and transparent nanogenerator by using transparent polymer materials. We have fabricated three types of regular and uniform polymer patterned arrays (line, cube, and pyramid) to improve the efficiency of the nanogenerator. The power generation of the pyramid-featured device far surpassed that exhibited by the unstructured films and gave an output voltage of up to 18 V at a current density of ∼0.13 μA/cm(2). Furthermore, the as-prepared nanogenerator can be applied as a self-powered pressure sensor for sensing a water droplet (8 mg, ∼3.6 Pa in contact pressure) and a falling feather (20 mg, ∼0.4 Pa in contact pressure) with a low-end detection limit of ∼13 mPa.
透明、柔韧且高效的电源是有机电子和光电设备的重要组成部分。在这项工作中，我们基于先前展示的摩擦电发电机的原理，利用透明聚合物材料展示了一种新型的高输出、柔韧且透明的纳米发电机。我们已经制造了三种规则且均匀的聚合物图案化阵列（线、立方体和金字塔），以提高纳米发电机的效率。具有金字塔特征的器件的发电能力远远超过了无结构薄膜的发电能力，在电流密度约为 0.13 μA/cm(2)时，输出电压高达 18 V。此外，所制备的纳米发电机可用作自供电压力传感器，用于检测水滴（8 毫克，接触压力约为 3.6 Pa）和下落的羽毛（20 毫克，接触压力约为 0.4 Pa），其低端检测限约为 13 mPa。
