NOVELTY - Superfine powder of metal oxide and lapping compound are added to agate mortar. The mixture is ground, coated on conductive glass, dried, and sintered to obtain titanium dioxide nanocrystalline thin film electrode. The obtained titanium dioxide nanocrystalline thin film electrode is added to organic solution, and electrode is removed and cleaned. The obtained electrode is added to squaraine dye (I). The electrode is removed from solution, and cleaned using organic solvent to obtain squaraine dye-sensitized nanocrystalline film electrode.    USE - Manufacture of squaraine dye-sensitized nanocrystalline film electrode used for solar battery, and used in photoelectric material field and bi-molecule detecting field.    ADVANTAGE - The solar battery using squaraine dye-sensitized nanocrystalline film electrode has excellent light stability and battery performance.    DETAILED DESCRIPTION - Superfine powder of metal oxide having particle diameter of 1-50 nm is added to an agate mortar, and specified amount of lapping compound is added to the mortar. The mixture is ground completely, coated on a conductive glass, dried, and sintered in a muffle furnace at 450 degrees C for 30 minutes, such that adhesiveness between grain and conductive glass substrate is improved and nanocrystalline grains do not gather mutually. The process is repeated for several times, and titanium dioxide nanocrystalline thin film electrode having specified thickness is formed. The obtained titanium dioxide nanocrystalline thin film electrode is added to an organic solution having specified concentration, and the electrode is removed and cleaned using distilled water. The cleaned electrode is again added to muffle furnace at specified temperature. The obtained electrode is added to squaraine dye of formula (I) as organic solution having specified concentration. The electrode is removed from the solution after specified time, and cleaned using organic solvent to obtain squaraine dye-sensitized nanocrystalline film electrode.    Z1,Z2=O, S, Se, C(R)2 or -CH=CH-;    R=1-9C alkyl;    R1,R2=-(CH2)iM, -(CH2)iC6H4X or 1-12C alkyl, in which C6H4 is benzene ring;    M=COOH or PO3H;    X=COOH, PO3H, fluoro, chloro, bromo, iodo, -NO2, CH3- or CH3O-;    R3,R4=H, (CH2)k, -COOH or (CH2)kCOO(CH2)iCH3;    i=1-12;    k=1-9;and    n=1, 2 or 3.    An INDEPENDENT CLAIM is included for squaraine dye, which contains carboxyl group and/or phosphate group in a molecule.