Organic photodetector and electronic device including the same
An organic photodetector including: a substrate; a first electrode arranged on the substrate; a second electrode arranged on the substrate and apart from the first electrode in a first direction crossing a direction perpendicular to the substrate; and an active layer covering the first electrode and the second electrode.
1. An organic photodetector comprising:
a substrate;
a first electrode arranged on the substrate;
a second electrode arranged on the substrate and spaced apart from the first electrode in a first direction crossing a direction perpendicular to the substrate; and
an active layer that generates a photocurrent in response to incident light, the active layer covering the first electrode and the second electrode.
2. The organic photodetector of claim 1 , wherein the first electrode and the second electrode are arranged in a same layer as one another.
3. The organic photodetector of claim 1 , wherein the active layer comprises:
a p-type semiconductor layer comprising a p-type organic semiconductor; and
an n-type semiconductor layer comprising an n-type organic semiconductor.
4. The organic photodetector of claim 3 , wherein the active layer is a mixed layer of the p-type organic semiconductor and the n-type organic semiconductor.
5. The organic photodetector of claim 3 , wherein
the p-type organic semiconductor comprises SubPc, CuPc, DBP, or any combination thereof, and
the n-type organic semiconductor comprises C60 fullerene, C70 fullerene, or any combination thereof.
6. The organic photodetector of claim 1 , further comprising:
a third electrode arranged on the substrate; and
an insulating layer covering the third electrode.
7. The organic photodetector of claim 6 , wherein the insulating layer covers an upper surface and a side surface of the third electrode.
8. The organic photodetector of claim 6 , wherein the active layer covers the insulating layer.
9. The organic photodetector of claim 6 , wherein the third electrode is arranged in a same layer as the first electrode and the second electrode.
10. An electronic device comprising:
a substrate;
an organic photodetector comprising a first electrode arranged on the substrate, a second electrode arranged on the substrate and spaced apart from the first electrode in a first direction crossing a direction perpendicular to the substrate, and an active layer that generates a photocurrent in response to incident light and that covers the first electrode and the second electrode; and
a light-emitting element comprising a pixel electrode arranged on the substrate, a counter electrode arranged on the pixel electrode, and a light-emitting layer that emits light in response to a driving current, the light-emitting layer being arranged between the pixel electrode and the counter electrode.
11. The electronic device of claim 10 , wherein the first electrode and the second electrode are arranged in a same layer as one another.
12. The electronic device of claim 10 , wherein the active layer comprises:
a p-type semiconductor layer comprising a p-type organic semiconductor; and
an n-type semiconductor layer comprising an n-type organic semiconductor.
13. The electronic device of claim 12 , wherein the active layer is a mixed layer of the p-type organic semiconductor and the n-type organic semiconductor.
14. The electronic device of claim 10 , further comprising:
a third electrode arranged on the substrate; and
an insulating layer covering the third electrode.
15. The electronic device of claim 14 , wherein the third electrode is arranged in a same layer as the first electrode and the second electrode.
16. The electronic device of claim 10 , wherein the pixel electrode is arranged in a same layer as the first electrode.
17. An electronic device comprising:
a substrate;
an organic photodetector comprising:
a first electrode arranged on the substrate;
a second electrode arranged on the substrate and spaced apart from the first electrode in a first direction crossing a direction perpendicular to the substrate; and
an active layer covering the first electrode and the second electrode; and
a light-emitting element comprising:
a pixel electrode arranged on the substrate;
a counter electrode arranged on the pixel electrode;
a light-emitting layer arranged between the pixel electrode and the counter electrode;
a first common layer arranged between the pixel electrode and the light-emitting layer; and
a second common layer arranged between the light-emitting layer and the counter electrode.
18. The electronic device of claim 17 , wherein
the substrate comprises a light-emitting area and a sensing area,
the light-emitting element is arranged to correspond to the light-emitting area, and
the organic photodetector is arranged to correspond to the sensing area.
19. The electronic device of claim 18 , wherein the pixel electrode and the light-emitting layer are arranged to correspond to the light-emitting area.
20. The electronic device of claim 18 , wherein the first common layer and the second common layer are arranged entirely in the light-emitting area and the sensing area.