Flexible and transparent graphene complementary logic gates

Ajjiporn Dathbun, Seongchan Kim, Sungjoo Lee, Do Kyung Hwang, Jeong Ho Cho

Research output: Contribution to journalArticle

1 Citation (Scopus)


In this study, flexible and transparent monolithic graphene transistors and complementary logic gates were fabricated using chemically doped graphene. The graphene channel was p- and n-doped with bis-(trifluoromethanesulfonyl)amine and poly(ethylene imine), respectively. Ion gel was utilized to gate the graphene transistor, and this facilitated low-voltage operation and yielded a coplanar-gate geometry. The resulting monolithic graphene transistors exhibited p-type or n-type transport depending on the type of dopant. The p-type and n-type graphene transistors were assembled together to fabricate various logic circuits, e.g., NOT, NAND, and NOR gates. Overall, the selective chemical doping of graphene enabled the realization of complementary logic gates, which represents a significant step in the application of graphene to future two-dimensional-based electronic devices.

Original languageEnglish
Pages (from-to)484-490
Number of pages7
JournalMolecular Systems Design and Engineering
Issue number3
Publication statusPublished - 2019 Jun

All Science Journal Classification (ASJC) codes

  • Chemistry (miscellaneous)
  • Chemical Engineering (miscellaneous)
  • Biomedical Engineering
  • Energy Engineering and Power Technology
  • Process Chemistry and Technology
  • Industrial and Manufacturing Engineering
  • Materials Chemistry

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