Graphene dual properties, mobility and polarisibility: the challenge

Abstract

Graphene has become a novel semiconductor material, which has many distinguishing material properties such as zero band gap, ultra high electron mobility and ultra-small optical dispersion [1-3], which determines its broad future as candidate material for photodetectors, solar cells and displaying [4-6]. Based on well-designed experiment, in which the transmission rate of graphene-quartz samples obtained with different incident angles at both 632.8 nm and 1550 nm light source. Angle change insensitivity in transmission rate is witnessed when incident angle is lower than 50°, however, there would be sharp increasing when incident angle is larger than 50°.