Patent ID: 8022294

Claim:
A photoelectric conversion device comprising oxide semiconductor fine particles sensitized with a methine based dye represented by the following formula (1a): in the formula (1a), n represents an integer of 0 to 7; R 1 represents an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or an acyl group; the group composed of the benzene ring “b”, N—R 1 and substituent E is an N—R 1 -substituted tetrahydroquinoline-6-yl group; X represents a carboxyl group; Y represents a cyano group; A 1 , A 2 and A 3 are each a hydrogen atom, or A 1 and A 3 or neighboring A 2 s or neighboring A 3 s combine together to form a linker having 2 to 3 carbon atoms or a linker composed of an aliphatic chain having 2 carbon atoms and an oxygen atom, which forms a 5- to 6-membered ring that may optionally be substituted with a methyl group, and the remaining A 1 , A 2 and A 3 are each a hydrogen atom; the benzene ring “b” may have 1 to 3 substituents selected from the group consisting of a halogen atom, an amide group, a hydroxyl group, a cyano group, a nitro group, an alkoxyl group, an acyl group, a substituted or unsubstituted amino group, an optionally substituted aliphatic hydrocarbon residue and an optionally substituted aromatic residue; when a plural number of substituents exist, these substituents may combine with each other similarly as described above to form an optionally substituted ring.