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HL: Fachverband Halbleiterphysik

HL 69: Quantum dots and wires III

HL 69.8: Vortrag

Donnerstag, 19. März 2020, 17:30–17:45, POT 151

Influence of UiO-66 Metal-Organic Framework Synthesis on contacted Carbon Nanotubes — •Marvin J. Dzinnik¹, Benedikt B. Brechtken¹, Hendrik A. Schulze², Peter Behrens², and Rolf J. Haug¹ — ¹Institut für Festkörperphysik, Leibniz Universität Hannover, Appelstraße 2, 30167 Hannover, Germany — ²Institut für Anorganische Chemie, Leibniz Universität Hannover, Callinstrasse 9, 30167 Hannover, Germany

Carbon Nanotubes (CNT) and metal-organic framework (MOF) hybrid materials are candidates for novel sensors [1]. While in previous experiments MOFs were synthesized on carbon nanotube networks [1] we are presenting measurements on individual multi-walled CNTs with UiO-66 MOFs.

We show the electronic properties of CNT samples before and after the MOF synthesis. DC-transport measurements were used in order to investigate the change in conductivity due to the MOF synthesis. The measured conductance decreased by a factor of 30. The electrical properties of the CNTs after the synthesis show Tomonaga-Luttinger liquid behavior indicating that the carbon nanotube still behaves as a one-dimensional system. In a further experiment a MOF between a contact and the CNT was used as a dielectric medium in a transistor setup. A positive gate voltage leads to a lower conductance of the CNT showing the gate action.

[1] H. A. Schulze et al., ChemNanoMat, 5, 1159-1169, (2019).