Transparent, highly conductive graphene electrodes from acetylene-assisted thermolysis of graphite oxide sheets and nanographene molecules

摘要

Transparent and highly conductive graphene electrodes have been fabricated throughacetylene-assisted thermolysis of graphite oxide (GO) sheets. This novel procedure usesacetylene as a supplemental carbon source to repair substantial defects within GO sheets,leading to the enhancement of graphitization of synthesized graphene electrodes. Theas-prepared graphene on quartz substrates exhibits an electrical conductivity of 1425 S cm~(-1)with an optical transmittance of more than 70% at a wavelength of 500 nm. Such anacetylene-assisted thermal treatment approach is also adopted to fabricate graphene electrodesfrom synthetic nanographene molecules, with an almost five times increase in conductivitycompared to samples prepared by the common thermal reduction.