Transparent and flexible polymerized graphite oxide thin film with frequency-dependent dielectric constant

Authors: D. W. Lee, J. W. Seo, G. R. Jelbert, L. de Los Santos V., J. M. Cole, C. Panagopoulos, and C. H. W. Barnes

Published in: Applied Physics Letters 95, 172901, 2009.

Here we report on the preparation of transparent and flexible polymerized graphite oxide, which is composed of carbons with sp3-hybridized orbitals and a nonplanar ring structure, and which demonstrates dispersion in its dielectric constant at room temperature. This frequency dependence renders the material suitable for creating miniaturized, flexible, and transparent variable capacitors, allowing for smaller and simpler integrated electronic devices. We discuss this polarizability in terms of space charge effects.

DOI: 10.1063/1.3251787