Photoelectric conversion device and method of manufacturing photoelectric conversion device

1. A photoelectric conversion device comprising:

a first carrier transport layer;

a photoelectric conversion layer containing an ionic crystalline compound;

a polysiloxane layer between the first carrier transport layer and the photoelectric conversion layer, the polysiloxane layer containing a polysiloxane having a polar functional group,

a first electrode;

a second electrode opposite the first electrode, wherein the first electrode, the first carrier transport layer, the polysiloxane layer, the photoelectric conversion layer, and the second electrode are stacked in this sequence; and

a second carrier transport layer between the photoelectric conversion layer and the second electrode.

2. The photoelectric conversion device according to claim 1 , wherein the ionic crystalline compound is a perovskite structured compound.

3. The photoelectric conversion device according to claim 1 , wherein the polar functional group includes at least one selected from an amino group, a thiol group, a carboxyl group, and a phosphono group.

4. The photoelectric conversion device according to claim 3 , wherein the polar functional group is a C 1 -C 5 alkyl group including, at an end thereof, at least one selected from an amino group, a thiol group, a carboxyl group, and a phosphono group.

5. The photoelectric conversion device according to claim 1 , wherein the polysiloxane is of formula (1)

where R 1 is the polar functional group, R 2 is at least one species selected from R 1 , a hydrogen atom, a hydroxy group, a C 1 -C 3 lower alkyl group, and a π-conjugated backbone, and n is a natural number greater than or equal to 10.

6. The photoelectric conversion device according to claim 1 , wherein the polysiloxane includes organic groups having π-conjugated structures.

7. The photoelectric conversion device according to claim 1 , wherein the organic groups having π-conjugated structures includes at least one species selected from benzene moiety, pyridine moiety, pyrrole moiety, thiophene moiety, imidazole moiety, pyrazole moiety, carbazole moiety, and an acridine moiety.

8. The photoelectric conversion device according to claim 1 , wherein the polysiloxane layer has a thickness of less than or equal to 5 nm.

9. The photoelectric conversion device according to claim 1 , wherein the polysiloxane layer contains semiconductor nanoparticles.

10. The photoelectric conversion device according to claim 1 , wherein the photoelectric conversion layer contains quantum dots.

11. The photoelectric conversion device according to claim 1 , wherein the photoelectric conversion layer is a light-emitting layer in which electrons and holes transported from the first electrode or the second electrode recombine to emit light.

12. The photoelectric conversion device according to claim 1 , wherein the photoelectric conversion layer is a light-absorbing layer that absorbs external light.

13. The photoelectric conversion device according to claim 1 , wherein the polysiloxane layer has a thickness of less than or equal to 5 nm and contains semiconductor nanoparticles.

14. The photoelectric conversion device according to claim 1 , wherein

the polysiloxane layer has a thickness of less than or equal to 5 nm, and

the photoelectric conversion layer contains quantum dots.

15. The photoelectric conversion device according to claim 1 , wherein

the polysiloxane layer contains semiconductor nanoparticles, and

the photoelectric conversion layer contains quantum dots.