Graphene is an attractive material for device applications, but device characteristics are very unstable because the graphene is very sensitive to environmental factors such as charges nearby the graphene, metal contacts, defects, contaminants and other adsorbates. Since the interactions between graphene and environmental factors affect the electrical characteristics of graphene devices, the interpretation of electrical characteristics as simple as current-voltage curves is non-trivial, despite the common practice of using well known electrical characterization methods that have been used in silicon MOSFET. This paper addresses major obstacles in the electrical characterization of graphene devices and offers countermeasures to improve the accuracy of electrical characterization methods.

• Byoung-Hun Lee(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology) Corresponding Author
• Young-Gon Lee(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)
• Uk-Jin Jung(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)
• Yong-Hun Kim(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)
• Hyeon-Jun Hwang(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)
• Jin-Ju Kim(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)
• Chang-Goo Kang(Department of Nanobio Materials and Electronics, School of Material Science and Engineering, Gwangju Institute of Science and Technology)