Berlin 2018 – wissenschaftliches Programm
CPP 20.21: Poster
Montag, 12. März 2018, 17:30–19:30, Poster A
One-Pot Synthesis of Copper Oxide Nanowires and PVDF/CuO Composite Films for Piezoelectric Energy Harvesting Application — Samiran Garain1, •Karsten Henkel1, Dipankar Mandal2, and Dieter Schmeißer1 — 1Angewandte Physik-Sensorik, Brandenburgische Technische Universität Cottbus-Senftenberg, K.-Wachsmann-Allee 17, 03046 Cottbus, Germany — 2Organic Nano Piezoelectric Devices Laboratory, Jadavpur University, Kolkata-700032, India
Copper oxide (CuO) is an attractive p-type oxide semiconductor with narrow band gap that has intriguing properties such as non-toxicity, chemical stability, electrocatalytic activity, abundant availability and low production cost. Polymeric materials have attracted great interest owing to their high flexibility, light weight, low cost production and high resistance against corrosion. Poly(vinylidene fluoride) (PVDF) is a commonly used piezoelectric polymer due to its excellent flexibility and piezoelectric properties. In this work, we adopted a one-pot synthesis of CuO nanowires by facile and selective chemical etching process of Cu substrate. XPS, XRD, SEM data ascribed the formation of polycrystalline CuO nanowires over the entire Cu surface. It has been observed that the uniformity, shape and size of the nanowires could be conveniently controlled by etching time and etchant concentration. We have also prepared piezoelectric nanogenerator based on the flexible PVDF/CuO composite film, where the traditional electrical poling treatment was avoided. In addition, dielectric properties have been studied to demonstrate the role of interfacial polarization.