Patent ID: 8519381

Claim:
An organic semiconductor device, comprising: a first metal electrode; a hole injection layer comprising a plurality of crystalline molecules; a hole transporting layer; a light-emitting layer; an electron injection layer; a second electrode; and a crystallinity controlling member which is a series of discontinuous clusters along a contact surface of the hole injection layer in contact with the first metal electrode, for controlling an orientation of the crystalline molecules of the hole injection layer, the crystallinity controlling member being a plurality of cohesion molecules that differ from the crystalline molecules of the hole injection layer, wherein the first metal electrode, the hole injection layer, the hole transporting layer, the light-emitting layer, the electron injection layer, and the second electrode are layered on a substrate in that order from a surface of the substrate, the hole injection layer removing holes from the first metal electrode, the hole transporting layer supplying holes removed by the hole injection layer to the light-emitting layer and each of the crystalline molecules has an orientation greater than or equal to 1 degree and less than or equal to 90 degrees with respect to the substrate.