School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
ACS Nano. 2013 Apr 23;7(4):3130-8. doi: 10.1021/nn400848j. Epub 2013 Mar 7.
A flexible, transparent acoustic actuator and nanogenerator based on graphene/P(VDF-TrFE)/graphene multilayer film is demonstrated. P(VDF-TrFE) is used as an effective doping layer for graphene and contributes significantly to decreasing the sheet resistance of graphene to 188 ohm/sq. The potentiality of graphene/P(VDF-TrFE)/graphene multilayer film is realized in fabricating transparent, flexible acoustic devices and nanogenerators to represent its functionality. The acoustic actuator shows good performance and sensitivity over a broad range of frequency. The output voltage and the current density of the nanogenerator are estimated to be ∼3 V and ∼0.37 μAcm(-2), respectively, upon the application of pressure. These values are comparable to those reported earlier for ZnO- and PZT-based nanogenerators. Finally, the possibility of rollable devices based on graphene/P(VDF-TrFE)/graphene structure is also demonstrated under a dynamic mechanical loading condition.
基于石墨烯/P(VDF-TrFE)/石墨烯多层膜的柔性透明声波驱动器和纳米发电机被演示。P(VDF-TrFE) 被用作石墨烯的有效掺杂层，显著降低了石墨烯的片电阻至 188 欧姆/平方。石墨烯/P(VDF-TrFE)/石墨烯多层膜的潜力在制造透明、柔性声波器件和纳米发电机方面得到了体现，以展示其功能。声波驱动器在很宽的频率范围内表现出良好的性能和灵敏度。在施加压力时，纳米发电机的输出电压和电流密度分别估计为约 3V 和约 0.37μAcm(-2)。这些值与早期报道的基于 ZnO 和 PZT 的纳米发电机相当。最后，在动态机械加载条件下，也展示了基于石墨烯/P(VDF-TrFE)/石墨烯结构的可卷曲器件的可能性。
