Non-destructive covalent functionalization of the graphene with chromium tricarbonyl

I-Fan Hu^1,2,3*, Ya-Ping Hsieh², Randolph E. Elmquist³, Chi-Te Liang¹

¹Department of Physics, National Taiwan University, Taipei, Taiwan
²Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
³National Institute of Standards and Technology, Gaithersburg, USA

* Presenter:I-Fan Hu, email:d08222006@ntu.edu.tw

In this work, we report the experimental realization of a non-destructive vapor-phase functionalization of the graphene with chromium tricarbonyl. Both CVD graphene and epitaxial graphene were used in order to prove the universal of functionalization method. With a series of detailed electrical property characterization, including the room temperature filed-effect measurements and the low-temperature magnetoresistance measurements, we guaranteed the non-destructive characteristic of the functionalization process. This work provides an ideal gateless approach for tuning the carrier density of graphene without degrading its extraordinary electrical property.

Keywords: Graphene, Graphene functionalizaiton, Graphene field effect transistor, Quantum Hall effect