Thermal stability studies of CVD-grown graphene nanoribbons: Defect annealing and loop formation
Thermal Stability
Annihilation
DOI:
10.1016/j.cplett.2008.12.082
Publication Date:
2008-12-31T04:16:30Z
AUTHORS (11)
ABSTRACT
We present a high temperature heat treatment study of CVD-grown graphene nanoribbons annealed up to 2800 °C, demonstrating a progressive annihilation of lattice defects as the heat treatment temperature is raised. Starting at 1500 °C, single and multiple loop formation were observed on the ribbons edges as the temperature was increased. The structural changes of the samples are documented by X-ray diffraction, Raman spectroscopy, TGA, SEM, and HRTEM. This work indicates that nanoribbon annealing eventually leads to defect-free samples, through graphitization and edge loop formation. The annealed material exhibits structural differences that could be tailored for a variety of specific applications.
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