Laser direct synthesis of graphene on quartz

Dapeng Wei, Birck Nanotechnology Center, Purdue University
James I. Mitchell, Birck Nanotechnology Center, Purdue University
Chookiat Tansarawiput, Birck Nanotechnology Center, Purdue University
Woongsik Nam, Birck Nanotechnology Center, Purdue University
Minghao Qi, Birck Nanotechnology Center, Purdue University
Peide D. Ye, Birck Nanotechnology Center, Purdue University
Xianfan Xu, Birck Nanotechnology Center, Purdue University

Abstract

We demonstrate a laser-based technique to directly synthesize few layer graphene on quartz substrates without using any metal catalyst. In our approach, a photoresist S-1805 (from Shipley Comp.) film coated on quartz wafers was heated, and then decomposed, by irradiation of a continuous-wave laser. The carbon atoms from the photoresist were dissolved in the molten quartz, and then extracted to form graphene when the temperature of the quartz was decreased. Raman spectroscopy shows the as-produced graphene is two to three layers thick. This laser-based method will provide a new approach and platform for applications of graphene-based devices. (C) 2012 Elsevier Ltd. All rights reserved.

Discipline(s)

Nanoscience and Nanotechnology