Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
2011-01-07
EPL, 93, 17002(2011)
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
4 pages, 3 figures; EPL 2011; In press
Scientific paper
10.1209/0295-5075/93/17002
Preparing graphene and its derivatives on functional substrates may open enormous opportunities for exploring the intrinsic electronic properties and new functionalities of graphene. However, efforts in replacing SiO$_{2}$ have been greatly hampered by a very low sample yield of the exfoliation and related transferring methods. Here, we report a new route in exploring new graphene physics and functionalities by transferring large-scale chemical vapor deposition single-layer and bilayer graphene to functional substrates. Using ferroelectric Pb(Zr$_{0.3}$Ti$_{0.7}$)O$_{3}$ (PZT), we demonstrate ultra-low voltage operation of graphene field effect transistors within $\pm1$ V with maximum doping exceeding $10^{13}\,\mathrm{cm^{-2}}$ and on-off ratios larger than 10 times. After polarizing PZT, switching of graphene field effect transistors are characterized by pronounced resistance hysteresis, suitable for ultra-fast non-volatile electronics.
Ahn Jong Hyun
Bae Sukang
Cong Chun-Xiao
Hong Byung Hee
Im Danho
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