Nanofabrication of heteromolecular organic nanostructures on epitaxial graphene via room temperature feedback-controlled lithography

Qing Hua Wang, Mark C. Hersam

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Nanoscale control of surface chemistry holds promise for tailoring the electronic, optical, and chemical properties of graphene. Toward this end, the nanofabrication of sub-5-nm heteromolecular organic nanostructures is demonstrated on epitaxial graphene using room temperature ultrahigh vacuum scanning tunneling microscopy. In particular, monolayers of the organic semiconductor 3,4,9,10-perylene-tetracarboxylic dianhydride (PTCDA) are nanopatterned on epitaxial graphene using feedback-controlled lithography (FCL) and then used as chemical resists to template the deposition of N,N′-dioctyl-3,4,9,10-perylene-tetracarboxylic diimide (PTCDI-C8). The generality of this FCL-based nanofabrication procedure suggests its applicability to a wide range of fundamental studies and prototype device fabrication on chemically functionalized graphene.

Original languageEnglish (US)
Pages (from-to)589-593
Number of pages5
JournalNano Letters
Volume11
Issue number2
DOIs
StatePublished - Feb 9 2011
Externally publishedYes

Keywords

  • Graphene
  • nanolithography
  • organic functionalization
  • scanning tunneling microscopy
  • self-assembled monolayer

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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