Light receiving/emitting element and light receiving/emitting apparatus

A photoelectric device, comprising:

• a light receiving/emitting element, comprising:
• a first organic photoelectric conversion unit, comprising:
• a first electrode;
• a second electrode;
• and
• a first organic photoelectric conversion layer between the first electrode and the second electrode;
• and
• a second organic photoelectric conversion unit on the first organic photoelectric conversion unit, wherein the second organic photoelectric conversion unit comprises:
• a third electrode;
• a fourth electrode;
• a second organic photoelectric conversion layer between the third electrode and the fourth electrode;
• and
• a third organic photoelectric conversion layer,
• wherein the second organic photoelectric conversion layer is adjacent and in contact with the third organic photoelectric conversion layer, and the second organic photoelectric conversion layer and the third organic photoelectric conversion layer are in a same plane,
• wherein the second organic photoelectric conversion layer and the third organic photoelectric conversion layer are on the first organic photoelectric conversion layer,
• wherein the first organic photoelectric conversion layer has a first spectral sensitivity, and the second organic photoelectric conversion layer has a second spectral sensitivity different from the first spectral sensitivity, and the third organic photoelectric conversion layer has a third spectral sensitivity different from the first spectral sensitivity and the second spectral sensitivity, and
• wherein one of the first organic photoelectric conversion unit or the second organic photoelectric conversion unit is configured to receive light and other of the first organic photoelectric conversion unit or the second organic photoelectric conversion unit is configured to emit light.