Loading...

Visualising structural modification of patterned graphene nanoribbons using tip-enhanced Raman spectroscopy

Su, W ; Sharif University of Technology | 2021

385 Viewed
  1. Type of Document: Article
  2. DOI: 10.1039/d1cc01769a
  3. Publisher: Royal Society of Chemistry , 2021
  4. Abstract:
  5. Graphene nanoribbons (GNRs) fabricated using electron beam lithography are investigated using tip-enhanced Raman spectroscopy (TERS) with a spatial resolution of 5 nm under ambient conditions. High-resolution TERS imaging reveals a structurally modified 5-10 nm strip of disordered graphene at the edge of the GNRs. Furthermore, hyperspectral TERS imaging discovers the presence of nanoscale organic contaminants on the GNRs. These results pave the way for nanoscale chemical and structural characterisation of graphene-based devices using TERS. © The Royal Society of Chemistry 2021
  6. Keywords:
  7. Electron beam lithography ; Graphene ; Graphene nanoribbon ; Hyperspectral imaging ; Raman spectroscopy ; Ambient conditions ; Disordered graphene ; Graphene nanoribbons ; Graphene nanoribbons (GNRs) ; Organic contaminant ; Spatial resolution ; Structural modifications ; Tip-enhanced Raman spectroscopy ; Nanoribbons ; Nanoribbon ; Organic compound ; Chemical analysis ; Chemical modification ; Chemical structure ; Devices ; Image quality ; Raman spectrometry ; Structure analysis ; Tip enhanced Raman spectroscopy
  8. Source: Chemical Communications ; Volume 57, Issue 56 , 2021 , Pages 6895-6898 ; 13597345 (ISSN)
  9. URL: https://pubs.rsc.org/en/content/articlelanding/2021/cc/d1cc01769a