Thermoelectric power of doped polyaniline near the metal–insulator transition. N-type organic thermoelectrics of donor–acceptor copolymers: improved power factor by molecular tailoring of the density of states. Solution-processed organic thermoelectric materials exhibiting doping-concentration-dependent polarity. Approaching disorder-free transport in high-mobility conjugated polymers. Role of disorder induced by doping on the thermoelectric properties of semiconducting polymers. Thermoelectric power measurements in highly conductive stretch-oriented polyaniline films. The influence of 2-acrylamido-2-methyl-1-propanesulfonic acid (AMPSA) additive concentration and stretch orientation on electronic transport in AMPSA-modified polyaniline films prepared from an acid solvent mixture. Thermoelectric properties of a semicrystalline polymer doped beyond the insulator-to-metal transition by electrolyte gating. Transport studies of protonated emeraldine polymer: a granular polymeric metal system. Zuo, F., Angelopoulos, M., MacDiarmid, A. Hopping transport in doped conducting polymers in the insulating regime near the metal–insulator boundary: polypyrrole, polyaniline and polyalkylthiophenes. Hopping in disordered conducting polymers. Bipolaron transport in doped conjugated polymers. Hopping transport and the Hall effect near the insulator–metal transition in electrochemically gated poly(3-hexylthiophene) transistors.
Three dimensionality of “metallic” states in conducting polymers: polyaniline.
Thermopower and conductivity of metallic polyaniline. Synthesis of electrically conducting organic polymers: halogen derivatives of polyacetylene, (CH) x. Correlation of Seebeck coefficient and electric conductivity in polyaniline and polypyrrole. Mateeva, N., Niculescu, H., Schlenoff, J.
Charge transport of the mesoscopic metallic state in partially crystalline polyanilines. Electrical conductivity in doped polyacetylene. This approach of heavy p-type doping is demonstrated to provide a promising route to high-performance n-type organic thermoelectric materials.īolto, B. Ultraviolet and inverse photoelectron spectroscopy measurements show that doping with oxidizing agents results in elimination of the transport gap at high doping concentrations. Specifically, the Seebeck coefficient of several p-doped polymers changes sign from positive to negative as the concentration of the oxidizing agents FeCl 3 or NOBF 4 increase, and Hall effect measurements for the same p -doped polymers reveal that electrons become the dominant delocalized charge carriers. Here, through Seebeck coefficient and Hall effect measurements, we show that mobile electrons contribute substantially to charge-carrier transport in π-conjugated polymers that are heavily p-doped with strong electron acceptors. It is commonly assumed that charge-carrier transport in doped π-conjugated polymers is dominated by one type of charge carrier, either holes or electrons, as determined by the chemistry of the dopant.