▎ 摘　　要

NOVELTY - A graphene structure (G1) (12) comprises a graphene doped with a dopant; and a hydrophobic organic layer (13) on at least one surface of the doped graphene. USE - In transparent electrode used for solar cell and display device (claimed) including organic electroluminescence device, electronic paper display device, and liquid crystal display device. ADVANTAGE - The graphene structure has a light transmittance of 75%. The doped graphene structure has improved optical and electrical properties, and improved stability against moisture and temperature in the air. The solar cell employing flexible graphene sheet-containing transparent electrode shows improved conductivity, light efficiency and processability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) transparent electrode comprising a transparent substrate; and the graphene structure (G1) on at least one surface of the transparent substrate; (2) preparing a graphene structure involving doping a graphene layer with a dopant solution; and forming a hydrophobic organic layer on the doped graphene layer; and (3) preparing a transparent electrode involving transferring a graphene on at least one surface of a transparent substrate; doping the graphene with a dopant solution; and forming a hydrophobic organic layer on the doped graphene. DESCRIPTION OF DRAWING(S) - The figure shows schematic view of a transparent electrode having a doped graphene structure. Transparent substrate (11) Graphene structure (12) Hydrophobic organic layer (13)