Pore-free bubbling delamination of chemical vapor deposited graphene from copper foils
Journal article, 2015

The electrolytic bubbling-assisted transfer of graphene from metal catalysts in chemical vapor deposition provides a high efficiency, low cost and environmental benign alternative to the traditional chemical etching method. Despite its high potential, the yield of bubbling delamination is yet low, mainly due to the induced pores in the graphene after the transfer. It is found that water and protons transported through the poly(methyl methacrylate) (PMMA) supporting layer play a critical role in pore formation. Once water and protons reach the PMMA-graphene interface before delamination is finished, the protons permeate the graphene and form trapped hydrogen bubbles between the graphene and the metal. The built-up gas pressure inside the bubbles is high enough to crack the PMMA/graphene sheet, thereby creating pores in the graphene. An optimized PMMA layer not only reduces trapped hydrogen bubble generation, but it is also mechanically stronger preventing cracking. This contributes significantly to the pore-free electrolytic bubbling-assisted delamination of graphene.

Author

Zhaoyao Zhan

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Jie Sun

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Lihui Liu

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Yu Cao

Chalmers, Materials and Manufacturing Technology, Surface and Microstructure Engineering

Niclas Lindvall

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Grigory Skoblin

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Avgust Yurgens

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Journal of Materials Chemistry C

2050-7526 (eISSN)

Vol. 3 33 8634-8641

Areas of Advance

Nanoscience and Nanotechnology

Subject Categories

Materials Engineering

Nano Technology

Infrastructure

Nanofabrication Laboratory

DOI

10.1039/c5tc01771h

More information

Created

10/8/2017