Direct fabrication of graphene/zinc oxide composite film and its characterizations

Adnan Ali, Jeongdai Jo, Young Jin Yang, Kyung Hyun Choi

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Graphene-based composites represent a new class of materials with potential for many applications. Graphene can be attached to a metal, a semiconductor, or any polymer for enhancing properties. In this work, a new mixed dispersion approach for graphene-based composite has taken on. Graphene flakes (<4 layers) and a well-known semiconductor zinc oxide (ZnO) (<50 nm particle size) have dispersed in N-methyl-pyrrolidone. We deposited graphene/ZnO composite thin film by a simple, low-cost, environmentally friendly and non-vacuum electrohydrodynamic atomization process on silicone substrate. Experiments have been carried out by changing flow rate and applied potential while keeping stand-off distance and substrate velocity constant, to discover the optimum conditions for obtaining a high-quality thin film. It has been explored that high-quality thin composite film is obtained at optimum flow rate of 300 μl/h at 6.3 kV applied potential after curing for 2 h at 300 C. Graphene/ZnO thin composite film has been characterized using Field emission scanning electron microscopy, Ultra-violet Visible near Infra Red spectroscopy, X-ray diffraction, Raman Spectroscopy and 3D-Nanomap. For electrical behavior analysis, a simple diode Indium tin oxide/(poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS)/polydioctylfluorene-benzothiadiazole(F8BT)/ (Graphene/ZnO) has fabricated. It is observed that at voltage of 0.3 V, the current in organic structure is at low value of 1.20 × 10-3 Amp/cm2 and after that as further voltage was applied, the device current increased by the order of 110 and reaches up to 1.32 × 10 -1 Amp/cm2 at voltage 2 V.

Original languageEnglish
Pages (from-to)323-330
Number of pages8
JournalApplied Physics A: Materials Science and Processing
Volume114
Issue number2
DOIs
Publication statusPublished - Feb 2014
Externally publishedYes

Fingerprint

Zinc Oxide
Graphite
Composite films
Zinc oxide
Graphene
Oxide films
Fabrication
Thin films
Electric potential
Flow rate
Semiconductor materials
Electrohydrodynamics
Near infrared spectroscopy
Composite materials
Atomization
Silicones
Substrates
Tin oxides
Field emission
Indium

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)

Cite this

Direct fabrication of graphene/zinc oxide composite film and its characterizations. / Ali, Adnan; Jo, Jeongdai; Yang, Young Jin; Choi, Kyung Hyun.

In: Applied Physics A: Materials Science and Processing, Vol. 114, No. 2, 02.2014, p. 323-330.

Research output: Contribution to journalArticle

Ali, Adnan ; Jo, Jeongdai ; Yang, Young Jin ; Choi, Kyung Hyun. / Direct fabrication of graphene/zinc oxide composite film and its characterizations. In: Applied Physics A: Materials Science and Processing. 2014 ; Vol. 114, No. 2. pp. 323-330.
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