, Volume 3, Issue 2, pp 98-102,
Open Access This content is freely available online to anyone, anywhere at any time.
Date: 27 Mar 2010

Lithography-free fabrication of high quality substrate-supported and freestanding graphene devices

Abstract

We present a lithography-free technique for fabrication of clean, high quality graphene devices. This technique is based on evaporation through hard Si shadow masks, and eliminates contaminants introduced by lithographical processes. We demonstrate that devices fabricated by this technique have significantly higher mobility values than those obtained by standard electron beam lithography. To obtain ultra-high mobility devices, we extend this technique to fabricate suspended graphene samples with mobilities as high as 120 000 cm2/(V·s).

This article is published with open access at Springerlink.com