title: Graphene-P(VDF-TrFE) multilayer film for flexible applications.
abstract: 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.
authors: School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon 440-746, Korea.
authors: Sang-Hoon
authors: SH
authors: Bae
authors: Orhan
authors: O
authors: Kahya
authors: Bhupendra K
authors: BK
authors: Sharma
authors: Junggou
authors: J
authors: Kwon
authors: Hyoung J
authors: HJ
authors: Cho
authors: Barbaros
authors: B
authors: Özyilmaz
authors: Jong-Hyun
authors: JH
authors: Ahn
mesh_terms: D000162:Acoustics / Q000295:instrumentation*; D055119:Elastic Modulus; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006108:Graphite / Q000737:chemistry*; D008422:Materials Testing; D008567:Membranes, Artificial; D055617:Micro-Electrical-Mechanical Systems / Q000295:instrumentation*; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure; D010316:Particle Size; D011145:Polyvinyls / Q000737:chemistry*; D013314:Stress, Mechanical
chemical_list: D008567:Membranes, Artificial; D011145:Polyvinyls; C073666:vinylidene fluoride-trifluoroethylene copolymer; D006108:Graphite