Patent ID: 7868319

Claim:
An organic semiconductor device, comprising: a bipolar organic semiconductor layer in which electrons and holes are movable; a hole giving/receiving electrode for giving/receiving holes to/from the organic semiconductor layer; an electron giving/receiving electrode, spaced a predetermined distance from the hole giving/receiving electrode, for giving/receiving electrons to/from the organic semiconductor layer; a hole-side gate electrode, arranged opposing a region of the organic semiconductor layer near the hole giving/receiving electrode with an insulating layer sandwiched, for controlling distribution of holes in the organic semiconductor layer; and an electron-side gate electrode, arranged opposing a region of the organic semiconductor layer near the electron giving/receiving electrode with an insulating layer sandwiched, for controlling distribution of electrons in the organic semiconductor layer, wherein the organic semiconductor layer is an organic semiconductor photo-sensitive layer that generates pairs of electrons and holes through external irradiation of light.