Photoelectric conversion element and dye for photoelectric conversion element
View Patent ↗A photoelectric conversion element includes a working electrode having a dye-supported metal oxide electrode in which a dye is supported on a metal oxide layer, a compound having a structure represented by the following general formula (1): is used as the dye. wherein R1 to R4 are each independently a linear alkyl group having 4 to 20 carbon atoms and may be the same or different; A1 and A2 are each any one selected from the following aromatic ring group A (a pyrrole ring in the formula (1) is represented by an arc a to show a condensation position with the pyrrole ring), may be the same or different, and may have a substituent in an aromatic ring; An p- is a p-valent anion; p is 1 or 2; and q is a coefficient for keeping a charge of the entire dye neutral. <Aromatic Ring Group A>
1. A photoelectric conversion element comprising a working electrode having a dye-supported metal oxide electrode having a dye supported on a metal oxide layer, wherein the dye comprises a compound having a structure represented by the following general formula (1):
wherein:
R1 to R4 are each independently a linear alkyl group having 4 to 20 carbon atoms;
A1 and A2 are each independently selected from the following aromatic ring group A:
wherein:
(a pyrrole ring in the formula (1) is represented by an arc a to show a condensation position with the pyrrole) ring, and may have a substituent in an aromatic ring;
An p- is a p-valent anion;
p is 1 or 2; and
q is a coefficient for keeping a charge of the entire dye neutral.
2. The photoelectric conversion element according to claim 1 , wherein in the general formula (1), A1 and A2 are each a benzene ring.
3. The photoelectric conversion element according to claim 1 , wherein in the general formula (1), R1 to R4 are each a linear alkyl group having 10 to 20 carbon atoms.
4. The photoelectric conversion element according to claim 2 , wherein in the general formula (1), R1 to R4 are each a linear alkyl group having 10 to 20 carbon atoms.
5. The photoelectric conversion element according to claim 1 , wherein the metal oxide layer is substantially composed of zinc oxide.
6. A dye for a photoelectric conversion element, which has a structure represented by the following general formula (1):
wherein:
R1 to R4 are each independently a linear alkyl group having 4 to 20 carbon atoms;
A1 and A2 are each independently selected from the following aromatic ring group A:
wherein:
a pyrrole ring in the formula (1) is represented by an arc a to show a condensation position with the pyrrole ring, and may have a substituent in an aromatic ring;
An p- is a p-valent anion;
p is 1 or 2; and
q is a coefficient for keeping a charge of the entire dye neutral.
7. The dye for a photoelectric conversion element according to claim 6 , wherein in the general formula (1), A1 and A2 are each a benzene ring.
8. The dye for a photoelectric conversion element according to claim 6 , wherein in the general formula (1), R1 to R4 are each a linear alkyl group having 10 to 20 carbon atoms.
9. The dye for a photoelectric conversion element according to claim 7 , wherein in the general formula (1), R1 to R4 are each a linear alkyl group having 10 to 20 carbon atoms.
10. The photoelectric conversion element according to claim 2 , wherein the metal oxide layer is substantially composed of zinc oxide.
11. The photoelectric conversion element according to claim 3 , wherein the metal oxide layer is substantially composed of zinc oxide.
12. The photoelectric conversion element according to claim 4 , wherein the metal oxide layer is substantially composed of zinc oxide.