Optimization of multi-layer graphene/PMMA synthesized by low-pressure chemical vapor deposition from acetylene precursor
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Author list: Fongchaiya S., Bodinthitikul N., Jutarosaga T.
Publisher: IOP Publishing
Publication year: 2018
Volume number: 1144
Issue number: 1
ISSN: 1742-6588
eISSN: 1742-6596
Languages: English-Great Britain (EN-GB)
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Abstract
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 %). © Published under licence by IOP Publishing Ltd.
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