▎ 摘　　要

We performed Hall effect measurements and Raman mapping of graphene synthesized by microwave plasma treatment under a low carbon concentration. The Hall mobility and average domain size were estimated to be 100-1000 cm(2)/Vs and around 30-100 nm, respectively, which are much higher than those of graphene deposited by conventional plasma chemical vapor deposition. In addition, dark-field transmission electron microscopy images showed domain sizes of around 100 nm. Thus, this method is expected to easily produce a large amount of high-quality graphene with high throughput. (C) 2014 Elsevier Ltd. All rights reserved.