Temperature dependence of electrical conductance in a single porous SnO<sub>2</sub> nanoribbon

Yu Wang; Idalia Ramos; Jorge Santiago-Avilés

doi:10.1117/12.722040

22 May 2007 Temperature dependence of electrical conductance in a single porous SnO₂ nanoribbon

Yu Wang, Idalia Ramos, Jorge Santiago-Avilés

Proceedings Volume 6591, Nanotechnology III; 65910E (2007) https://doi.org/10.1117/12.722040
Event: Microtechnologies for the New Millennium, 2007, Maspalomas, Gran Canaria, Spain

Abstract

Porous SnO₂ nanoribbons, with their width and thickness of around 20&mgr;m and 20nm, respectively, have been fabricated from the metallo-organic dimethyldineodecanoate tin using electrospinning and thermal decomposition techniques. The electrical conductance of one synthesized single ribbon has been measured using the two-probe method in atmosphere following a cycle of heating from 300 to 660K and subsequent cooling from 660K to 300K. During the heating, the conductance, G is not so sensitive to the temperature below 380K and, above that, follows an Arrhenius relation with a thermal activation energy of 0.918±0.004 eV until 660K; upon cooling, G follows the same Arrhenius relation until 570K and, below that, observes another Arrhenius relation with its activation energy decreasing to 0.259±0.006eV down to 300K. After a cycle of heating and cooling, G returns to a value higher than its initial one. The Arrhenius relations are attributed to the surface adsorption and desorption of moisture and oxygen, and the G hysteresis between 300 and 380K is attributed to the partial replacement of adsorbed oxygen by moisture because of the porous nature of the surface.

Citation Download Citation

Yu Wang, Idalia Ramos, and Jorge Santiago-Avilés "Temperature dependence of electrical conductance in a single porous SnO₂ nanoribbon", Proc. SPIE 6591, Nanotechnology III, 65910E (22 May 2007); https://doi.org/10.1117/12.722040

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