Deposition, characterization, and thin-film-based chemical sensing of ultra-long chemically synthesized graphene nanoribbons.
Bottom-up synthesis of graphene nanoribbons (GNRs) is an essential step toward utilizing them in electronic and sensing applications due to their defined edge structure and high uniformity. Recently, structurally perfect GNRs with variable lengths and edge structures were created using various chemical synthesis techniques. Nonetheless, issues like GNR deposition, characterization, electronic properties, and applications are not fully explored. Here we report optimized conditions for deposition, characterization, and device fabrication of individual and thin films of ultra-long chemically synthesized GNRs. Moreover, we have demonstrated exceptional NO2 gas sensitivity of the GNR film devices down to parts per billion (ppb) levels. The results lay the foundation for using chemically synthesized GNRs for future electronic and sensing applications.
Department of Electrical Engineering, University of Southern California , Los Angeles, California 90089, United States.
Ahmad N
AN
Abbas
Gang
G
Liu
Akimitsu
A
Narita
Manuel
M
Orosco
Xinliang
X
Feng
Klaus
K
Müllen
Chongwu
C
Zhou
D006108:Graphite / Q000737:chemistry*; D046911:Macromolecular Substances / Q000737:chemistry; D008968:Molecular Conformation; D037742:Nanotubes, Carbon / Q000737:chemistry*; D013499:Surface Properties
D046911:Macromolecular Substances; D037742:Nanotubes, Carbon; D006108:Graphite