Active device

An active device, disposed on a substrate and comprising:

• a gate;
• an organic active layer;
• a gate insulation layer, disposed between the gate and the organic active layer;
• a plurality of crystal induced structures, distributing in the organic active layer, each of the crystal induced structures surrounded by the organic active layer and inducing the organic active layer to crystallize a region of the organic active layer surrounding the corresponding crystal induced structure, wherein each region of the organic active layer has a grain boundary with an adjacent region, wherein the crystal induced structures directly contact with the substrate or the gate insulation layer, wherein the crystal induced structures are a plurality of nano-metal structures separated from each other;
• and
• a source and a drain, disposed on two opposite sides of the organic active layer,
• wherein each of the plurality of nano-metal structures is separated by a distance with the adjacent nano-metal structures, and the distance is from 100 nanometers to 10 micrometers.