Title :
Selective nitrogen doping of graphene by energy-controlled neutral beam
Author :
Takeru Okada;Seiji Samukawa
Author_Institution :
Institute of Fluid Science, Tohoku University, 2-1-1 Katahira Sendai 980-8577, Japan
fDate :
7/1/2015 12:00:00 AM
Abstract :
Nitrogen-doped graphene potentially could be used in electronic devices, sensors, and energy-based devices. The bonding state between the carbon and nitrogen for each application plays an important role, e.g., the graphitic nitrogen has a high catalytic activity in fuel cell systems. However, it is still difficult to synthesize the bonding state selectivity. We conducted a nitrogen neutral beam modification of graphene, which has precise controllable beam energy. XPS analysis revealed that the bonding state of the carbon nitrogen depends on the beam energy and a moderate level of beam energy from a nitrogen neutral beam selectively forms graphitic carbon. The bonding state control during the nitrogen doping process was found to be possible, and a neutral beam induced doped graphene synthesis could potentially be better for many different applications.
Keywords :
"Nitrogen","Graphene","Niobium","Carbon","Doping","Bonding","Laser beams"
Conference_Titel :
Nanotechnology (IEEE-NANO) , 2015 IEEE 15th International Conference on
DOI :
10.1109/NANO.2015.7388856