Science Daily April 4, 2022 Researchers in Germany investigated the charge and thermoelectric transport in modulation-doped large-area rubrene thin-film crystals with different crystal phases. They showed that modulation doping allows achieving superior doping efficiencies even for high doping densities when conventional bulk doping runs into the reserve regime. Modulation-doped orthorhombic rubrene achieved much improved thermoelectric power factors. Modulation doping technique avoid impurity scattering in the highly ordered undoped narrow bandgap semiconductor allowing both carrier concentration and mobility to be independently maximized. The work paves new ways to achieve flexible thermoelectric devices to directly generate electrical power from heat in an […]
Tag Archives: Bioelectricity
Storing energy in plants with electronic roots
Science Daily November 8, 2021 By watering bean plants with a solution that contains conjugated oligomers an international team of researchers (Sweden, France, Spain, Greece) has shown that the roots of the plant become electrically conducting and can store energy. To circumvent biological barriers encountered in previous attempts, and access the internal tissue, the researchers leveraged the biocatalytic machinery of the plant cell wall to seamlessly integrate conductors with mixed ionic–electronic conductivity along the root system of the plants. They used a trimer, ETE-S, which is polymerized by a natural process in the plant. The roots remained electrically conducting for […]