Electrical Properties of Graphene Oxide Layers Prepared by Material Inkjet Printing

Electrical Properties of Graphene Oxide Layers Prepared by Material Inkjet Printing

Scopus Article

The paper deals with the study of optical and electrical properties of inkjet-printed graphene oxide (GO) layers, which can be used e.g. for the preparation of various types of electronic devices. To ensure stable inkjet printing conditions of GO solution, mixture was thoroughly stirred for 1 h at room temperature or sonicated in the bath for 30 min. The thicknesses of prepared layers were determined by spectroscopic ellipsometry and profilometry. An electrical conductivity of GO was increased by the multistep reduction (due to annealing) – the conductivity was changed by these processes about seven orders of magnitude (GO is an isolator and reduced GO is a conductor). For electrical and dielectric measurements, samples with GO and mixture of GO with PEDOT were prepared. All current-voltage characteristics have a diode character. From AC measurements the bulk electrical conductivity and geometric capacity of prepared layers were determined.

The paper deals with the study of optical and electrical properties of inkjet-printed graphene oxide (GO) layers, which can be used e.g. for the preparation of various types of electronic devices. To ensure stable inkjet printing conditions of GO solution, mixture was thoroughly stirred for 1 h at room temperature or sonicated in the bath for 30 min. The thicknesses of prepared layers were determined by spectroscopic ellipsometry and profilometry. An electrical conductivity of GO was increased by the multistep reduction (due to annealing) – the conductivity was changed by these processes about seven orders of magnitude (GO is an isolator and reduced GO is a conductor). For electrical and dielectric measurements, samples with GO and mixture of GO with PEDOT were prepared. All current-voltage characteristics have a diode character. From AC measurements the bulk electrical conductivity and geometric capacity of prepared layers were determined.

organic electronics, graphene oxide, inkjet printing, electrical and dielectric properties

organic electronics, graphene oxide, inkjet printing, electrical and dielectric properties

POSPÍŠIL, J.; SCHMIEDOVÁ, V.; ZMEŠKAL, O.; VRETENÁR, V.; KOTRUSZ, P.

2016

05.11.2015

Trans Tech Publications

Trans Tech Publications, Churerstrasse 20, CH-8808 Pfaffikon, Switzerland

1013-9826

Key Engineering Materials (print)

674

2016

Swiss Confederation

109

114

6

https://www.scientific.net/KEM.674.109

http://hdl.handle.net/