GRAPHENE SHEET, TRANSPARENT ELECTRODE HAVING SAME, ACTIVE LAYER, AND DISPLAY DEVICE, ELECTRONIC DEVICE, OPTOELECTRONIC DEVICE, BATTERY, SOLAR CELL, AND DYE-SENSITIZED SOLAR CELL INCLUDING SAME

摘要

The present invention relates to a graphene sheet, to a transparent electrode having same, to an active layer, and to a display device, to an electronic device, to an optoelectronic device, to a battery, to a solar cell, and to a dye-sensitized solar cell, including same. The graphene sheet comprises: a lower sheet including 1 to 20 layers of graphene; and a ridge which is formed on the lower sheet and includes a greater number of layers of graphene than does the lower sheet, wherein the ridge is the grain boundary of a metal.