Flexible, transparent dielectric capacitors with nanostructured electrodes

Sophie Sorel; Umar Khan; Jonathan N. Coleman

doi:10.1063/1.4750059

Flexible, transparent dielectric capacitors with nanostructured electrodes

Sophie Sorel, Umar Khan, Jonathan N. Coleman

Trinity College Dublin

Research output: Contribution to journal › Article › peer-review

35 Citations (Scopus)

Abstract

We have prepared flexible, transparent, dielectric capacitors by spraycasting very thin networks of single walled nanotubes (SWNTs) or silver nanowires (AgNWs) onto either side of free-standing polymer films. Impedance spectroscopy showed these structures to behave as a capacitor in combination with a series resistance. Those capacitors with SWNT electrodes displayed optical transmittance between 57% and 74%, capacitances ranging from 0.4 to 1.1 μF/cm ² and series resistances ranging 400 Ω/□-10 kΩ/□. However, using AgNW electrodes gave similar transmittance and capacitance but series resistance as low as 60 Ω/□. Finally, the properties of these capacitors were invariant under flexing.

Original language	English
Article number	103106
Journal	Applied Physics Letters
Volume	101
Issue number	10
DOIs	https://doi.org/10.1063/1.4750059
Publication status	Published - 3 Sep 2012
Externally published	Yes

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Flexible, transparent dielectric capacitors with nanostructured electrodes

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