NOVELTY - Fabricating a doped conjugated polymer film, comprises: mixing a polar substance, a polar solvent and a doped conjugated polymer to form a doped conjugated polymer solution; and forming the doped conjugated polymer film with the doped conjugated polymer solution, where the polar substance comprises an alkyl compound (I), a substituted benzene compound (II), inorganic acids and/or benzene-containing organic acids, and the polar solvent comprises water, ethers, alcohols, sulfoxides, alcohol ethers, ketones, amines, nitrites, carboxylic acids and/or amides.    USE - The method is useful for fabricating a doped conjugated polymer film (claimed), which is useful in solar cell, capacitor, LED, pattern etching, electrostatic-sensitive device, flexible electrode, electromagnetic interference shielding, chemical sensor, anti-corrosion, electrode material, electro-chromic display and electrostatic discharge.    ADVANTAGE - The method provides the doped conjugated polymer film with lower sheet resistance, higher conductivity, thermal stability and good flexibility.    DETAILED DESCRIPTION - Fabricating a doped conjugated polymer film, comprises: mixing a polar substance, a polar solvent and a doped conjugated polymer to form a doped conjugated polymer solution; and forming the doped conjugated polymer film with the doped conjugated polymer solution, where the polar substance comprises an alkyl compound of formula (R8-C((R1)(R7))-(C((R2)(R6)))e-C((R3)(R5))-R4) (I), a substituted benzene compound of formula (II), inorganic acids and/or benzene-containing organic acids, and the polar solvent comprises water, ethers, alcohols, sulfoxides, alcohol ethers, ketones, amines, nitrites, carboxylic acids and/or amides.    R1-R14 = H, F, Cl, Br, I, amino, formyl, carboxyl, OCjH2j+1, CjH2j+1, SCjH2j+1, N(CjH2j+1)2, CjH2j+1SO3H or CjH2jPO3H2;    j = 0-8; and    e = 0-5, where at least one of R1-R14 comprises at least one halo.    An INDEPENDENT CLAIM is included for treating the doped conjugated polymer film, comprising providing the doped conjugated polymer film, and adding a mixed solution to the doped conjugated polymer film, where the mixed solution contains the polar substance and the polar solvent.