Poly(methyl methacrylate)-derived graphene films on different substrates using rapid thermal process: A way to control the film properties through the substrate and polymer layer thickness

A. Kathalingam, Hafiz Muhammad Salman Ajmal, Sivalingam Ramesh, Heung Soo Kim, Sam Dong Kim, Soo Ho Choi, Woochul Yang, Ki Kang Kim, Hyun Seok Kim

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

Increasing interest and applications for graphene and carbon-based films emphasize the need for economical synthesizing techniques. We report a facile and novel synthesis method to prepare graphene, graphitic carbon, graphitic carbon nitride composite layers depending upon the spin-coated poly(methyl methacrylate) (PMMA) polymer layer and substrate used. Few and multilayer graphene sheets were formed on SiO2 covered Si substrate using a simple rapid thermal annealing process. We examined hot plate and rapid thermal annealing using a nickel capping layer and found that the rapid thermal process converted PMMA into graphene efficiently. The resultant graphitic films were characterized using FESEM, HRTEM, XRD and Laser Raman. Current-voltage response of the prepared graphene layers was analyzed fabricating as two terminal devices. The thickness of the formed layer depended on PMMA layer thickness, and the metal capping layer was crucial for converting PMMA into graphene. This polymer conversion method to fabricate graphene layers will be attractive for many graphene applications due to its versatility.

Original languageEnglish
Pages (from-to)3752-3763
Number of pages12
JournalJournal of Materials Research and Technology
Volume8
Issue number5
DOIs
StatePublished - Sep 2019

Keywords

  • Graphene
  • Graphitic carbon
  • Graphitic carbon nitride
  • Poly(methyl methacrylate)
  • Polymer
  • Rapid thermal annealing

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