NOVELTY - An organic-photoelectric-conversion-element composition comprises a P-type-N-typecoupled organic semiconductor polymer(s).    USE - Composition is used for forming thin films of organic photoelectric conversion elements of photoelectric cells (claimed) e.g. wet dye-sensitized solar cells and bulk heterojunction-type organic thin-film solar cells. Can also be used for FETs, infrared photodetectors, photovoltaic detectors, image pick-up elements of cameras or medical image photograph systems, LEDs, laser elements, amplifiers and radiator used in telecommunication, holographic memory elements, and electrochromic displays.    ADVANTAGE - The composition has excellent photoelectric-conversion efficiency and heat durability.    DETAILED DESCRIPTION - An organic-photoelectric-conversion-element composition comprises a P-type-N-typecoupled organic semiconductor polymer(s) chosen from polymers of formulae: -(-A(-asterisk)-A1(-asterisk)-)l-/(B'-asterisk)m (I), -(-A(-asterisk)-A1(-asterisk)-)l-/-(-B'1(-asterisk)-)n-(-B'2-)n' (b) (II), -(-L1(-asterisk)-)p-(-L2(-asterisk)-)q-(-L3(-(B')s)-)r-/-(-A(-asterisk)-A1(-asterisk)-)l-(-A2-A3-)l'- (a) (III), -(-L1(-asterisk)-)p-(-L2(-asterisk)-)q-(-L4(-asterisk)-)t-/-(-A(-asterisk)-A1(-asterisk)-)l-(-A2-A3-)l'- (a)/-(-B'1(-asterisk)-)n-(-B'2-)n' (b) (IV), and asterisk-(-A4-)u-asterisk/asterisk-(-B3-)v-asterisk (V).    A,A1-A4=P-type organic semiconductor unit;    B',B'1-B'3=N-type organic semiconductor unit;    L1-L4=bivalent or trivalent coupling group which does not contain P-type organic semiconductor unit or N-type semiconductor unit;    l,n,r,t,u,v=1-1000;    m,s=1-10;and    p,q,l',n'=0-1000.    (i) A and A1 are P-type organic semiconductors with differing structures; (ii) A4 consists of 2 or more types of different P-type organic semiconductors; (iii) In formulae (I) and (II), at least one -asterisk of A and A1 is coupled with at least one -asterisk of B' and B'1 directly or through divalent coupling group, with remaining -asterisk being coupled with H or monovalent substituent; (iv) In formulae (III) and (IV), at least one -asterisk of L1 and L2 is coupled with -asterisk of A and A1 directly or through bivalent coupling group, with remaining -asterisk being coupled with H or monovalent substituent; (v) In formula (IV), at least one -asterisk of L4 is coupled with at least one -asterisk of B1 directly or through bivalent coupling group, with the remaining -asterisk being coupled with H or monovalent substituent; (vi) In formula (V), at least one -asterisk of A4 is coupled with at least one -asterisk of B3 directly or through bivalent coupling group, with remaining -asterisk being coupled with H or monovalent substituent; (vii) p and q are not 0 simultaneously; and (viii) H or monovalent substituent is coupled with joint terminal represented by bond (-). INDEPENDENT CLAIMS are included for the following:    (1) photoelectric cell (10) consisting of a photoelectric-conversion layer (3) comprising the composition, provided between electrodes (11,12);    (2) P-type-N-typecoupled organic semiconductor polymer;    (3) compound of formula: -(-A(-asterisk)-A1(-asterisk)-)l-/asterisk-L'a-Z1 (1a), Y'1-L'c-asterisk/Y'2-L'd-asterisk/-(-A(-asterisk)-A1(-asterisk)-)l-(-A2-A3-)l'- (ab), or Z'1a-L'f-(-A4-)u-L'g-Z'1b (5a) having P-type organic semiconductor unit; and    (4) manufacture of polymer, which involves reacting the corresponding compounds chosen from compound (A) which is a combination of compound (1a) and Z2-L'b-B' (1b), compound (B) which is a combination of compound (1a) and Z2-L'b-asterisk/-(-B'1(-asterisk)-)n-(-B'2-)n', compound (C) which is a combination of compound (ab) and Y'3-(B')s, compound (D) which is a combination of compound (ab) and Y'4-L'e-asterisk/-(-B'1(-asterisk)-)n-(-B'2-)n', and compound (E) which is a combination of compound (5a) and Z'2a-L'h-(-B'3-)v-L'i-Z'2b.    L'a-L'i=single bond or bivalent coupling group;    Z1,Z2=reactive functional group;    Z'1a,Z'1b,Z'2a,Z'2b=H or substituent, with at least one of Z'1a and ,Z'1b, and at least one of Z'2a and Z'2b being substituent which is a reactive functional group;and    Y'1-Y'4=polymerizable group.    (i) At least 1 -asterisk of A and A1 is coupled with asterisk of asterisk-L'a-Z1, with uncoupled portion being coupled with H or monovalent substituent; (ii) At least 1 -asterisk of A and A1 is coupled with asterisk of asterisk-L'c-Y'1, or asterisk of asterisk-L'd-Y'2, with uncoupled portion being coupled with H or monovalent substituent; (iii) H or monovalent substituent is coupled with joint terminal of both sides; and (iv) The partial structure of Y'1 forms L1, partial structure of Y'2 forms L2, partial structure of Y'3 forms L3, and partial structure of Y'4 forms L4.    DESCRIPTION OF DRAWING(S) - The drawing shows a side view of the structure of an organic thin-film solar cell.    Photoelectric-conversion layer (3)    Transparent support (7)    Bulk heterojunction-type organic thin-film solar cell as photoelectric cell (10)    Electrodes (11,12)    Hole transportation layer (21)