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Edge-Functionalized Graphene Nanoribbon Chemical Sensor: Comparison with Carbon Nanotube and Graphene

Authors :
Dae Woo Kim
Soo-Yeon Cho
Hannes Jung
Kyeong Min Cho
Jihan Kim
Sanggyu Chong
Hyeong-Jun Koh
Source :
ACS applied materialsinterfaces. 10(49)
Publication Year :
2018

Abstract

With growing focus on the use of carbon nanomaterials in chemical sensors, one-dimensional graphene nanoribbon (GNR) has become one of the most attractive channel materials, owing to its enhanced conductance fluctuation by quantum confinement effects and dense, abundant edge sites. Due to the narrow width of a basal plane with one-dimensional morphology, chemical modification of edge sites would greatly affect the electrical channel properties of a GNR. Here, we demonstrate for the first time that chemically functionalizing the edge sites with aminopropylsilane (APS) molecules can significantly enhance the sensing performance of the GNR sensor. The resulting APS-functionalized GNR has a sensitivity ((Δ R/ R

Details

ISSN :
19448252
Volume :
10
Issue :
49
Database :
OpenAIRE
Journal :
ACS applied materialsinterfaces
Accession number :
edsair.doi.dedup.....902e38ded2ff3cd0b273d13fe2029cee