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AKE: Arbeitskreis Energie
AKE 5: Nanotechnologies for Energy Applications
AKE 5.4: Vortrag
Montag, 26. März 2012, 12:30–12:45, A 151
Nanogenerator on the base of zinc oxide nanowires — •Farzaneh Fattahi Comjani1, Julia Waltermann1, Kay Michael Günther2, Michael Köhring1, Ulrike Willer2, Stefan Kontermann1, and Wolfgang Schade1,2 — 1Fraunhofer Heinrich Hertz Institut, Am Stollen 19B, Goslar, Germany — 2Energie-Forschungszentrum Niedersachsen, Am Stollen 19B, Goslar, Germany
Nanogenerators on the base of piezoelectric nanowires is a new method for the transformation of mechanical energy into electric energy. Nanowires synthesized from materials with the wurtzite structure, such as ZnO, CdS and ZnS are piezoelectric and therefore the most important materials for nanogenerators. ZnO is also a semiconductor so that a nanogenerator on the base of ZnO nanowires is benefiting. The principle of ZnO nanogenerators is based on inducing a piezoelectrical potential in the nanowire by an external strength. In this work, we report a nanogenerator composed of vertical and dense ZnO nanowires, which are produced by a simple and economical wet chemical method directly on a glass substrate coated with silver. The capacity and electrical potential measurements show that the ZnO nanogenerator produces a piezocurrent if it is mechanical oscillated in microscopic scale.