NOVELTY - An electrode layer comprises porous film made of oxide semiconductor fine particles sensitized with dye.    USE - Electrode layer for photoelectric conversion device used for dye sensitized solar cell (claimed).    ADVANTAGE - The electrode layer provides excellent overall properties particularly high photoelectric power conversion efficiency.    DETAILED DESCRIPTION - An electrode layer comprises porous film made of oxide semiconductor fine particles sensitized with dye of formula D-C(R1)=CR2-(CR3=CR4)n-A.    A=pyridiniumasteriskX-, quinolinium asteriskX-, or isoquinolinium asteriskX- (optionally substituted);    D=group for (III) or (IV);    G=-R28-COOH, -R28-COOZ, -R28-S(O)2OOH, -R28-S(O)2OZ, -R28-O-S(O)2OH, -R28-O-S(O)2OZ, - R28-P(O)(OH)2, -R28-P(O)(OZ)2, -R28-P(O)(OH)(OZ), -R28-O-P(O)(OH)2, -R28-O-P(O)(OZ)2, -R28-O-P(O)(OH)(OZ);    R1-R4=H, S(O)2OR7, S(O)2R7, S(O)R7, S(O)OR7, fluorinated 1-8C alkyl of formula -C(R6)=R5, or optionally substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl, or 6-20C cycloalkynyl, where alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14;or    R1 and R2, R1 and R15, R1 and R16, R2 and R15, R2 and R16 or R3 and R4=form together optionally substituted aliphatic 5-,6-or 7-membered ring;or    R2 and R15=form together optionally substituted heteroaromatic 5-, 6- or 7-membered ring; or a substituent of A ortho to the D-C(R1)=CR2-(CR3=CR4)n group and either if n=0, R2 or if n=1, R4 form together an optionally substituted aliphatic 5-,6-, or 7-membered ring;or    R1=D;or    if D=group of formula (IV), R1 and R18 can form together optionally substituted 5-,6- or 7-membered ring;    R5=NR8, NOR8, N-NR8R9, O, or S;    R6=COSR7, CO-NR7NR10R11, CO-NR7OR10, CO-O-COR7, CONR7-CO-R10, CO-NR7-COOR10, CONR7CONR10R11, NR7R10, OR7, SR7, NR7NR10R11, NR7OR10, O-COR7, O-COOR7, OCONR7R10, NR7COR10, NR7COOR10, NR7CONR10R11, COR7, COOR7, CO-NR7R10, NR12-C(=NR13)R7 or optionally substituted 1-20C alkyl, 6-20C aryl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl, or 6-20C cycloalkynyl, where the alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14 , where the hetero(aryl), aralkyl, aralkenyl, aralkynyl, (cyclo)alkyl, (cyclo)alkenyl and (cyclo)alkynyl are optionally substituted by G, halo, S-R14, O-R14, CO-R14, CO-OR14, O-CO-R14, NR14R'14, CONR14R'14, NR14-CO-R'14, S(O)2OR14, and/or S(O)2OZ; where the aryl and heteroaryl can be further substituted by (fluorinated) 1-20C alkyl, fluorinated O-1-20C alkyl, -CN, 2-20C alkenyl, 2-20C alkynyl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl, and/or 6-20C cycloalkynyl;or    R7 or R10=part of R2 forms together with R1, R15, or R16 a direct bond, methylene or ethylene thus forming an aliphatic 5-, 6- or 7-membered ring; part of R4 forms together with R3 a direct bond, methylene or ethylene thus forming an aliphatic 5-, 6- or 7-membered ring; or part of R2 with n=0 or part of R4 when n=1 forming together with substituent of A ortho to the D-C(R1)=C(R2)(C(R3)=C(R4))n group or optionally substituted aliphatic 5-, 6- or 7-membered ring;    R12, R13=form together optionally substituted 5-, 6- or 7-membered ring;    R14=H or optionally substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 5-20C cycloalkyl, 5-20C cycloalkenyl or 6-20C cycloalkynyl;    R8, R9, R25, R26, R27=H or optionally substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl or 6-20C cycloalkynyl where alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14;    R7, R10, R11==H or optionally substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 3-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl or 6-20C cycloalkynyl where alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14;    R17, R18=H or optionally substituted 1-20C alkyl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-24C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl or 6-20C cycloalkynyl where alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14;or    R17 and R18; or R17 and R22, R17 and R20, and/or R18 and R19=form together an optionally substituted 5-, 6- or 7-membered ring;    R15, R16, R19-R24=H, NR25R26, OR25, SR25, NR25-NR26R27, NR25-OR26, O-CO-R25, O-CO-OR25, O-CO-NR25R26, NR25-CO-R25, NR25-CO-OR26,NR25-CO-NR26R27, CO-R25, CO-OR25, CO-NR25R26, S-CO-R25, CO-SR25, CO-NR25-NR26R27, CO-NR25-OR26, CO-O-CO-R25, CO-O-CO-OR25, CO-O-CO-NR25R26, CO-NR25-CO-R26, CO-NR25-CO-O R26, optionally substituted 1-20C alkyl, 6-20C aryl, 2-20C alkenyl, 2-20C alkynyl, 6-20C aryl, 4-20C heteroaryl, 7-20C aralkyl, 8-20C aralkenyl, 8-20C aralkynyl, 4-20C cycloalkyl, 5-20C cycloalkenyl or 6-20C cycloalkynyl, where the alkyl and cycloalkyl are optionally interrupted by O, S, and/or NR14;    R28=bond or optionally substituted 1-20C alkylene, 2-20C alkenylene, 2-20C alkynylene, 6-20C arylene, 4-9C heteroarylene, 7-11C aralkylene, 8-11C aralkenylene, 8-11C aralkynylene, 6-11C heteroaralkylene, 7-11C heteroaralkenylene, 8-11C heteroaralkynylene or 5-6C cycloalkylene;    X-=inorganic anion, preferably Cl-, Br-, I-, SCN-, BF4- , PF6-, ClO4-, SbF6-, AsF6-, or organic particularly carboxylate, sulfonate, sulfate, phosphate, or phoshonate;    Z=N(R14)4, Li, Na, K, or an ammonium cation which is part of (I) as part of group A;and    n=0-1, preferably 0.    Provided that (A) R1-R4=fluorinated 1-8C alkyl or R2 and/or R4=S(O)2OR7, S(O)2R7, S(O)R7, S(O)OR7, fluorinated 1-8C alkyl of formula -C(R6)=R5; and (B) A and/or at least one of R1-R4 comprises group G.