NOVELTY - A photoelectric conversion element has an electrode (10) having a pigment and a support for supporting pigment. The pigment contains cyanine compound (I).    USE - Photoelectric conversion element e.g. solar cell for optical sensor.    ADVANTAGE - The photoelectric conversion element has improved photoelectric conversion efficiency.    DETAILED DESCRIPTION - A photoelectric conversion element has an electrode having a pigment and a support for supporting pigment. The pigment contains cyanine compound of formula (I).    R1,R2=hydroxy, nitro, cyano, halo, alkyl, alkoxy, aryl, arylalkyl, or their derivative;    a,b=0-4;    R3-R6=R1,R2 including H;    at least one of R3+R4 and/or R5+R6=double bond or ring structure;    X1=-C(R7)(R8)-, -N(R9)-, sulfur atom, oxygen atom, selenium atom, or tellurium atom;    X2=-C(R10)(R11)-, -N(R12)-, sulfur atom, oxygen atom, selenium atom or tellurium atom;    R7,R8,R10,R11=group formed by excluding H from group of formula (i), group (i), alkyl, alkoxy, aryl, arylalkyl or their derivative;    R9,R12=R3-R6;    Y1,Y2=anchor group, alkyl, alkoxy, aryl, arylalkyl, or their derivative, at least one is anchor group;    Q=coupling group having 1-7C methine chain structure;    An power (p-)=p valent anion;    p=1 or 2;    q=coefficient which maintains neutral electric charge;    coupling between L1 and T1=double bond or triple bond;    L1=carbon atom;    T1=carbon atom, oxygen atom or nitrogen atom;    x-z=0 or 1;    R21-R23=H, hydroxy, nitro, cyano, halo, 1-4C alkyl or 1-4C haloalkyl;    R24=H, hydroxyl, nitro, cyano, halo, 1-4C alkyl, 1-4C alkoxy, 1-4C haloalkyl, or 1-4C haloalkoxy;    R21+R24,R22+R23=ring structure;and    n=0-4.    When T1 is oxygen atom, x and y are 0. When T1 is nitrogen atom, y+z is 0 or 1. An INDEPENDENT CLAIM is included for pigment having cyanine structure (I).    DESCRIPTION OF DRAWING(S) - The drawing shows the sectional view of structure of photoelectric conversion element.    Electrode (10)    Conductive substrate (11)    Metal oxide semiconductor layer (12)    Counter electrode (20)    Conductive substrate (21)    Conducive layer (22)    Electrolyte layer (30)