NOVELTY - A polydispersed thiophene homopolymer or copolymer is new.    USE - For electrically conducting composition for electronic device e.g. thin film transistor, photovoltaic cell such as solar cell, light emitting device, or nanocomposite film (claimed).    ADVANTAGE - The inventive polymer leads to vast improvement in the performance of devices in which they are incorporated, such performance can be e.g. ability to absorb or convert radiation energy into electricity.    DETAILED DESCRIPTION - A polydispersed thiophene homopolymers of formula (A) or copolymer of formula (B) is new.    Y1=-(CH2)n-Z, radical of formulae (1-4);    X=H, 1-16C aliphatic or aromatic group, Br, Cl, I, or any of Y1;    p=6-500;    R1=4-20C aliphatic or any of Y1;    n=0-6;    m=1-3;    Z=-NH2, -NHR2, -N(R2)2, -SH, -P(O)(OH)2, -OP(O)(OH)2, -COOH, -P(O)(R2)2, -P(R2)2, or pyridyl;    R2=1-8C aliphatic hydrocarbon group;    Y2=Y1;    W1=H, 1-12C aliphatic, aromatic or heterocyclic group, Br, Cl, or I, or any Y2;    R1=H, 1-16C aliphatic, aromatic or heterocyclic group;    R3=any Y2.    INDEPENDENT CLAIMS are also included for:    (A) an electrically conducting composition, comprising the inventive polymer and an inorganic semiconductor;    (B) a thin film transistor comprising the inventive polymer;    (C) an electronic device such as photovoltaic cell, light emitting device, and nanocomposite film, comprising the inventive polymer;    (D) a method of producing the composition, comprising mixing a solution containing the inventive polymer with solutions containing compounds that are inorganic semiconductors or that react to form inorganic semiconductors; and    (E) a method of producing a thin film transistor, comprising forming thin film transistor comprising a polymer of formula (A1) and an inorganic semiconductor, heating the transistor to a temperature that the polymer having the formula (B1).    DESCRIPTION OF DRAWING(S) - The drawing shows a configuration of the photovoltaic cell incorporating the inventive polymer.