Photoelectric conversion element and solar cell

摘要

An all solid-state dye sensitizing type photoelectric conversion element excellent in photoelectric conversion efficiency and stability of photoelectric conversion function due to the prevention of desorption of the dye, and a solar cell comprising the photoelectric conversion element are provided. The present invention relates to a photoelectric conversion element comprising a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate, wherein the sensitizing dye is represented by the general formula (1) and the solid hole transport layer comprises a polymer obtainable by polymerizing a compound represented by the following general formula (2) or a multimer of the compound.;

主权项

1. A photoelectric conversion element comprising a first electrode, a photoelectric conversion layer comprising a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate,
wherein said sensitizing dye is represented by the following general formula (1): wherein R1 and R2 each independently represent a hydrogen atom, a linear or branched alkyl group having 1 to 24 carbon atoms in which at least one of hydrogen can be substituted by a substituent, and an alkenyl group having 2 to 32 carbon atoms, in which at least one of hydrogen can be substituted by a substituent, R3 represents a hydrogen atom, at least one of the hydrogen atoms in the ring b1 may be substituted by a substituent, provided that a plurality of substituents may bond with each other to form a ring which may have a substituent, or a plurality of the rings b1 may be fused; Z represents an organic residue having an acidic group, and an electron-attracting group or an electron-attracting ring structure; m is an integer from 3 to 4, and each ring may each independently have a substituent; said solid hole transport layer comprises a polymer obtainable by polymerizing a compound represented by the following formula or a multimer of one of the following formula:wherein X1 and X2 each independently represent a hydrogen atom, a linear or branched alkyl group having 6 to 18 carbon atoms, or —OR4 group, R4 represents a linear or branched alkyl group having 1 to 5 carbon atoms.