NOVELTY - A photoelectric conversion element comprises a first electrode, a photoelectric conversion layer containing a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate, where the sensitizing dye is triphenylamine compound (I), and the solid hole transport layer comprises a polymer obtainable by polymerizing a thiophene compound or a multimer of the compound.    USE - As photoelectric conversion element in solar cell (claimed); and as energy source for converting solar energy into electric energy.    ADVANTAGE - The element provides 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. The element can be produced by simple and cost-effective method. The solar cell is excellent in photoelectric conversion efficiency and stability of photoelectric conversion function in which the elution of the electrolyte is prevented by using a solid hole transport layer and the desorption of the dye is prevented.    DETAILED DESCRIPTION - A photoelectric conversion element comprises a first electrode, a photoelectric conversion layer containing a semiconductor and a sensitizing dye, and a solid hole transport layer, and a second electrode, on a substrate, where the sensitizing dye is triphenylamine compound of formula (I), and the solid hole transport layer comprises a polymer obtainable by polymerizing a compound of formula thiophene (substituted on 3-position by X1 and on 4-position by X2) (II) or a multimer of the compound.    R1 and R2=H, halo, aromatic residue, a linear or branched 1-32C hydrocarbyl, 2-32C alkenyl, 2-32C alkynyl, 1-32C alkoxy or 1-32C alkylthio;or    R1+R2=a ring structure;    R3=H, halo, a linear or branched 1-24C alkyl, 6-24C aryl or 7-24C aralkyl;    Z=organic residue having an acidic group, or an electron-attracting group or an electron-attracting ring structure;    m=0-4;    X1 and X2=H, linear or branched 1-24C alkyl, 6-24C aryl, -OR4, -SR5, -SeR6 or -TeR7;or    X1+X2=a ring structure;    R4-R7=H or linear or branched 1-24C alkyl.    At least one of H atoms in the ring b1 is optionally substituted by a substituent, where substituents optionally bond with each other to form a ring which optionally has a substituent or the rings b1 are optionally fused. Provided that when m is greater than or equal to 2, each ring optionally has a substituent.