NOVELTY - A photoelectric conversion element comprises a pair of electrodes and a semiconductor layer comprising semiconductor carrying a triaryl amine dye and an electrolyte layer between the electrodes.    USE - As a photoelectric conversion element useful in solar cell (claimed) useful as an energy source for solar light, inorganic solar cells.    ADVANTAGE - The photoelectric conversion element provides a dye sensitized type transducer having high photoelectric conversion efficiency and high durability. The triaryl amine dye molecule used has both pi -electron conjugated system having electron donating ability and an acidic adsorption group giving a cell having high photoelectric conversion efficiency. Majority of known organic dye showing the photoelectric conversion ability has only one acidic group which causes absorption with the titanium oxide thin layer. The present dyes have sufficient aggregate forming ability and high photoelectric conversion efficiency due to the presence of a long-chained alkyl group in the triarylamine dye mother nucleus. As a result the acidic groups not adsorbed to the titanium oxide thin layer are left when the dye has several acidic groups. The dye having the above characteristics easily forms the aggregate when adsorbing with the titanium oxide thin layer and the absorption spectrum is shifted to longer wavelength side compared to that of the single molecular absorption. Thus utilization of visible light of longer wavelength side for photoelectric conversion can be made possible and the sensitizing dyes are found, which are superior in the conversion efficiency to dyes having one acidic group or no alkyl chain.    DETAILED DESCRIPTION - A photoelectric conversion element comprises a pair of electrodes and a semiconductor layer comprising semiconductor carrying a dye and an electrolyte layer between the electrodes where the dye is a triaryl amine dye represented by formula X2-Ar2-N(Ar3)(Ar1-X1) (I) or X14-Ar14-N(Ar13-X13)(Ar15)-N(Ar12-X12)(Ar11-X11) (II).    Ar1 and Ar2=arylene, heterocyclic group or composite group of an arylene group and heterocyclic group;    Ar3=aryl, heterocyclic group or composite group of an arylene group and heterocyclic group ;    X1 and X2=straight chain residue having an acidic group which may have a mono-valent substituent and one to eight saturated or unsaturated 5-30C aliphatic hydrocarbon;    Ar11-Ar15=arylene, heterocyclic group or composite group of arylene group and heterocyclic;    X11-X14= H or alkyl or alkenyl group (both having acidic group which may have mono-valent substituent or one to eight saturated/unsaturated 5-30C aliphatic hydrocarbon).    The Ar1, Ar2 and Ar3 groups may form a ring by bonding with each other. The Ar11-Ar15 may form a ring by bonding with each other. At least two of X11-X14 are each alkyl or alkenyl group having acidic group which may have mono-valent substituent and the remainders are each hydrogen atom and one to eight saturated/unsaturated 5-30C aliphatic hydrocarbon group.