Optimization of multi-layer graphene/PMMA synthesized by low-pressure chemical vapor deposition from acetylene precursor

High quality and large-scale graphene are required for large-scale applications, especially flexible transparent conductive touch-screen panels. Chemical vapor deposition is so far the best method for the synthesis of high-quality graphene on the large scale. In this work, we synthesized multi-layer...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-12, Vol.1144 (1), p.12054
Main Authors: Fongchaiya, Somboon, Bodinthitikul, Nutdanai, Jutarosaga, Tula
Format: Article
Language:English
Subjects:
Acetylene
Bilayers
Chemical etching
Chemical synthesis
Chemical vapor deposition
Copper
Electrical properties
Flow velocity
Graphene
Low pressure
Metal foils
Multilayers
Optimization
Polymethyl methacrylate
Precursors
Raman spectra
Touch screens
Transmittance
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Summary:High quality and large-scale graphene are required for large-scale applications, especially flexible transparent conductive touch-screen panels. Chemical vapor deposition is so far the best method for the synthesis of high-quality graphene on the large scale. In this work, we synthesized multi-layer graphene on copper foils by low-pressure chemical vapor deposition from acetylene precursor at the flow rate of 20-40 mL/min and with reaction times from 10-30 minutes. Graphene on copper foils was then coated with PMMA and transferred by a wet chemical etching method. The transmittance and electrical properties of graphene on polymer were investigated. The Raman spectra of graphene synthesized with the acetylene flow rate of 30 mL/min for 10 minutes showed the characteristics of bi-layer graphene (I2D/IG = 1.6) with the lowest sheet resistance values (2.05 kΩ/sq) and the best transmittance (73 %).
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1144/1/012054