Paraffin-enabled graphene transfer
Author(s)Leong, Wei Sun; Wang, Haozhe; Yeo, Jingjie; Martin-Martinez, Francisco J.; Zubair, Ahmad; Shen, Pin-Chun; Mao, Yunwei; Palacios, Tomas; Buehler, Markus J; Hong, Jin-Yong; Kong, Jing; ... Show more Show less
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The performance and reliability of large-area graphene grown by chemical vapor deposition are often limited by the presence of wrinkles and the transfer-process-induced polymer residue. Here, we report a transfer approach using paraffin as a support layer, whose thermal properties, low chemical reactivity and non-covalent affinity to graphene enable transfer of wrinkle-reduced and clean large-area graphene. The paraffin-transferred graphene has smooth morphology and high electrical reliability with uniform sheet resistance with ~1% deviation over a centimeter-scale area. Electronic devices fabricated on such smooth graphene exhibit electrical performance approaching that of intrinsic graphene with small Dirac points and high carrier mobility (hole mobility = 14,215 cm 2 V −1 s −1 ; electron mobility = 7438 cm 2 V −1 s −1 ), without the need of further annealing treatment. The paraffin-enabled transfer process could open realms for the development of high-performance ubiquitous electronics based on large-area two-dimensional materials.
DepartmentMassachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Nature Publishing Group
Leong, Wei Sun, Haozhe Wang, Jingjie Yeo, Francisco J. Martin-Martinez, Ahmad Zubair, Pin-Chun Shen, Yunwei Mao, Tomas Palacios, Markus J. Buehler, Jin-Yong Hong & Jing Kong. "Paraffin-enabled graphene transfer." Nature Communications 10:1 (2019):867.
Final published version