Title

Facile one-pot synthesis of 3D graphite-SiO2 composite foam for negative resistance devices

Document Type

Article

Publication Date

1-1-2017

Abstract

In this study, we successfully prepare a porous graphite-SiO composite foam via a facile glucose-foaming-based method. The foam was characterized by XRD, XPS, SEM, Raman, and soft X-ray absorption spectroscopy of the carbon and oxygen K-edges and by silicon K-edge X-ray absorption near edge structure (XANES) spectroscopy. The electrical properties of the sample were evaluated using current-voltage measurements. The synthesized graphite-SiO composite foam showed negative resistance effect, i.e. an increase in the applied voltage led to a decrease in current. This negative resistance effect can be explained by two possible mechanisms: (1) the existence of defect states and (2) a change in the charge shifting amount. 2 2

Publication Source (Journal or Book title)

RSC Advances

First Page

41812

Last Page

41818

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