| 摘要 |
A photoelectric conversion element, having: an electrically-conductive support; a photoconductor layer having a semiconductor fine-particle layer adsorbed a dye; a charge transfer layer containing an electrolyte; and a counter electrode; which are provided on one side of the support in this order, in which the dye has at least one terdentate ligand having at least one acidic group; at least one ligand coordinating to a metal atom M has an sp2 carbon atom; a cyclic group binds to the sp2 carbon atom; a specific substituent R is substituted at an atom of α- or β-position to the atom of the cyclic group directly binding to the sp2 carbon atom; and with the metal atom M, an atom G1 of the α- or β-position, and an atom G2 of the substituent R, an angle θ (∠MG1G2) is 150° or less. |
| 主权项 |
1. A photoelectric conversion element, having:
an electrically-conductive support; a photoconductor layer having a layer of semiconductor fine-particles that have adsorbed a dye; a charge transfer layer containing an electrolyte; and a counter electrode; which are provided on one side of the electrically-conductive support in this order, wherein the dye has at least one terdentate ligand having at least one acidic group; at least one ligand coordinating to a metal atom M has an sp2 carbon atom; a cyclic group binds to the sp2 carbon atom; in a circle position connecting through a carbon atom(s) from an atom of the cyclic group directly binding to the sp2 carbon atom, a substituent R is substituted at an atom of an α-position or β-position to the atom of the cyclic group directly binding to the sp2 carbon atom, with the substituent R being selected from a linear or branched alkyl group, a cycloalkyl group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylthio group, a cycloalkylthio group, an arylthio group, an amino group, an alkylamino group, a cycloalkylamino group, an arylamino group, a heterocyclic amino group, a silyl group, or a silyloxy group; and when the atom of the α-position or β-position to which the substituent R binds is defined as G1 and an atom of the substituent R which directly binds to the atom G1 is defined as G2, an angle θ (∠MG1G2) formed by the metal atom M, the atom G1 and the atom G2, which is centered on the atom G1, is 150° or less, wherein the metal complex dye is represented by formula (I):
M(LD)m1(LA)m2(X)m3.C1 Formula (I) wherein, in formula (I), M represents Ru or Os; LD represents a bidentate or terdentate ligand represented by formula (A-4) or (A-5); LA represents a terdentate ligand represented by formula (B1); X represents a monodentate ligand; CI represents a counter ion in the case where the counter ion is necessary to neutralize a charge in formula (I); m1 represents 1 or 2; m2 represents 1; and m3 represents 0 or 1; wherein, in Formulae (A-4) and (A-5), the ring A represents a thiophene ring or a benzene ring; when the ring A is a thiophene ring, R and R1 each represent a linear alkyl group in which R and R1 do not bind together to form a ring, n2 is 0 or 1, b1 is 1, and Rd represents a trifluoromethyl group; when the ring A is a benzene ring, R and R1 each represent an alkoxy group in which R and R1 do not bind together to form a ring, n2 is 0 or 1, b1 is 1, and Rd represents a trifluoromethyl group; and in Formula (A-4), ring A bonds to the pyridine ring at the meta or para position but not at the ortho position; wherein, in formula (B1) A represents a carboxylic acid; and a0 is 1. |
