TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - The nano-electroconductive material is nano-carbon material or a nano-metal material, preferably carbon nanotube, carbon nanofiber, graphite, graphene, carbon nanoparticles, and metal nanowires. The dopant is at least 1 chosen from onium salt compound, oxidizing agent, acidic compound, and electron-acceptor compound. The thermoelectric conversion component contains 0-60 parts mass dopant with respect to 100 parts mass high molecular compound. The onium salt compound is a compound which produces acid by heating or active energy ray irradiation. The electrodes are formed of aluminum, gold, silver, or copper. Preferred Property: The base material has flexibility.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Composition: Thermoelectric conversion component further contains organic solvent. The low molecular conjugated compound is polycyclic aromatic heterocyclic compound or polycyclic aromatic hydrocarbon compound. The polycyclic aromatic hydrocarbon compound is the polycyclic aromatic hydrocarbon compound without having perylene structure in which four or more rings are condensed to form one ring. The aromatic heterocyclic ring is 5- or 6-membered ring. The aromatic heterocyclic ring is thiophene ring, furan ring, or pyrrole ring. The condensed polycyclic structure has at least 1 substituent, which is bonded to a ring at the end of the condensed polycyclic structure. The substituent is a composite substituent of alkyl, aryl, heterocyclyl, alkoxy, dialkylamino, or alkoxycarbonyl. The thermoelectric conversion layer further contains high molecular compound and dopant. The low molecular conjugated compound has condensed polycyclic structure of formulae (I)-(IV).X=C or hetero.At least one of C'-F' ring is of formula (V) or (VI).    TECHNOLOGY FOCUS - POLYMERS - Preferred Composition: The high molecular compound is at least polymer chosen from conjugated polymer and non-conjugated polymer. Preferred Process: The conjugated polymer and non-conjugated polymer is formed by polymerizing or copolymerizing compound chosen from thiophene-type compound, pyrrole-type compound, aniline-type compound, acetylenic compound, p-phenylene-type compound, p-phenylene-vinylene-type compound, p-phenylene-ethynylene-type compound, fluorene-type compound, arylamine-type compound, vinyl compound, (meth)acrylate compound, carbonate compound, ester compound, amide compound, imide compound, and siloxane compound. Thermoelectric conversion component is formed by dispersing the nano-electroconductive material in the organic solvent.