Patent ID: 8164098

Claim:
A semiconductor element comprising: a first electrode; a semiconductor layer containing an organic compound; an insulating film which electrically insulates the first electrode and the semiconductor layer; a second electrode which injects electrons into the semiconductor layer; and a third electrode which injects holes into the semiconductor layer, wherein the third electrode has at least partially a layer comprising a first composite material containing an organic compound having a hole-transporting property and a metal oxide, wherein the layer comprising the first composite material in the third electrode is formed to be directly in contact with the semiconductor layer, wherein the second electrode has at least partially a layer comprising a second composite material containing an organic compound having an electron-transporting property and alkaline metal or alkaline earth metal, and the layer comprising the first composite material, wherein the second electrode is formed of three layers of the layer comprising the first composite material, the layer comprising the second composite material, and a conductive layer, and wherein the layer comprising the second composite material is directly in contact with the semiconductor layer, and the layer comprising the first composite material and the layer comprising the second composite material are directly in contact with each other in the second electrode.