• 文献标题:   Laser direct patterning of a reduced-graphene oxide transparent circuit on a graphene oxide thin film
  • 文献类型:   Article
  • 作  者:   YUNG KC, LIEM H, CHOY HS, CHEN ZC, CHENG KH, CAI ZX
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF APPLIED PHYSICS
  • ISSN:   0021-8979
  • 通讯作者地址:   Hong Kong Polytech Univ
  • 被引频次:   27
  • DOI:   10.1063/1.4812233
  • 出版年:   2013

▎ 摘  要

In this study, reduced-graphene oxide (GO) circuits were directly patterned on glass using an industrially available excimer laser system. A threshold of laser energy density was observed, which provided a clear differentiation on whether the GO was reduced. A sharp drop of resistance by a factor of 10 4 was measured as the laser energy density increased from 65 to 75 mJ/cm(2). The highest conductivity measured was similar to 1.33 x 10(4) S/m, which is among the best reported in the literature for any laser reduction method. Raman analysis of the excimer laser-reduced GO film revealed the formation of a prominent 2D peak at 2700 cm(-1). The relative signal strength between the Raman D and G peaks suggests that the amount of structural disorder in the reduced GO is insignificant. The reduced GO displays a transmittance greater than 80% across the entire range from 450 to 800 nm. The outstanding electrical, optical, and morphological properties have enabled graphene to display promising applications, and this nano-processing method makes graphene even more attractive when used as a transparent electrode for touch screens and in many more applications. (C) 2013 AIP Publishing LLC.