NOVELTY - A photoelectric conversion element (10) has a first electrode (2), a photoelectric converting layer (6) containing a semiconductor (5) and a sensitizing dye (4), a positive hole transport layer (7), and a second electrode (8) sequentially formed on a substrate (1), where the positive hole transport layer contains polymer containing 2,3-dihydro-thieno(3,4-b)(1,4)dioxine repeating unit (I), 3,4-dihydro-2H-thieno(3,4-b)(1,4)dioxepine repeating unit (II) and benzo(c)thiophene repeating unit (III), and the dye contains ruthenium dye compound (IV) and amine dye compounds (5A), (5B) and (5C).    USE - Photoelectric conversion element for a dye sensitized-solar cell (claimed).    ADVANTAGE - The element has high photoelectric conversion efficiency and durability. The element is manufactured at low cost.    DETAILED DESCRIPTION - A photoelectric conversion element has a first electrode, a photoelectric converting layer containing a semiconductor and a sensitizing dye, a positive hole transport layer, and a second electrode sequentially formed on a substrate, where the positive hole transport layer contains polymer containing 2,3-dihydro-thieno(3,4-b)(1,4)dioxine repeating unit of formula (I), 3,4-dihydro-2H-thieno(3,4-b)(1,4)dioxepine repeating unit of formula (II) and benzo(c)thiophene repeating unit of formula (III), and the sensitizing dye contains ruthenium dye compound of formula (IV) and amine dye compounds of formulae (5A), (5B) and (5C).    T=H, halo, linear or branched 1-30C alkyl, 3-10C cycloalkyl, 1-30C alkoxy, 2-30C polyethylene oxide or optionally substituted 4-30C aromatic ring-containing group;    R1-R4=T;    R5=halo, linear or branched 1-30C alkyl, 1-30C alkoxy or optionally substituted 4-30C aromatic ring-containing group;    n=1 or 2;    m=0-2n+4;    R6-R9=H, halo, linear or branched 1-30C alkyl, 1-30C alkoxy, 2-30C polyethylene oxide or optionally substituted 4-30C aromatic ring-containing group;    X1,X2=carboxyl, sulfo group or their salts;    Y1,Y2=T;    L1,L2=-NCS, -SCN, -SeCN, -CN or -Cl;    Ar1-Ar3,Ar4-Ar7,Ar9,Ar10=optionally substituted 4-30C aromatic ring-containing group, which has 6-30C alkyl or linear or branched 6-30C alkoxy;    Ar1+Ar2+Ar3,Ar4+Ar5,Ar6+Ar7,Ar9+Ar10=ring structure;    Z=acidic group, electron-attractive group or electron-withdrawing ring structure;    p=1-3;    Ar8=bivalent 4-30C aromatic ring-containing group;    q=1-4;    R10=3-10C cycloalkyl substituted by linear or branched 1-30C alkyl, linear or branched 1-30C alkyl, or unsubstituted 3-10C cycloalkyl;and    r=1-2, where optionally substituted 4-30C aromatic ring-containing group is preferably thiophen ring.    INDEPENDENT CLAIMS are also included for the following:    (1) a method for manufacturing the photoelectric conversion element, which involves forming the positive hole transport layer by electrolytic polymerizing 2,3-dihydro-thieno(3,4-b)(1,4)dioxine monomer of formula (Ia), 3,4-dihydro-2H-thieno(3,4-b)(1,4)dioxepine monoer of formula (IIa) or benzo(c)thiophene monomer of formula (IIIa)    (2) a dye sensitized-solar cell comprising the photoelectric conversion element.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional view of a photoelectric conversion element.    Substrate (1)    Electrodes (2, 8)    Barrier layer (3)    Sensitizing dye (4)    Semiconductor (5)    Photoelectric converting layer (6)    Positive hole transport layer (7)    Photoelectric conversion element (10)