Publications by authors named "Paolo Sebastiano Floris"
Article Synopsis
- The study explores the use of Lewis-paired complexes, specifically B(CF) (BCF) and FTCNQ, as advanced dopants for organic semiconductors to overcome issues like low electrical conductivity and thermal stability.
- These new dopants significantly improve the performance of poly(3-hexylthiophene) (P3HT), achieving conductivities over 300 S cm in isotropic films, and show a dramatic increase in thermoelectric power factor compared to traditional dopants.
- Additionally, BCF:FTCNQ-doped P3HT demonstrates enhanced thermal stability and dedoping activation energy, making it at least 10 times more stable than conventional dopants.
Point defects can be used to tailor the properties of semiconductors, but can also have undesired effects on electronic and thermal transport, particularly in ultrascaled nanostructures, such as nanowires. Here we use all-atom molecular dynamics to study the effect that different concentrations and spatial distributions of vacancies have on the thermal conductivity of Si nanowires, overcoming the limitations of previous studies. Although vacancies are not as effective as the nanovoids found in porous Si, they can still reduce the thermal conductivity in ultrathin Si nanowires by more than a factor of two, when found in concentrations smaller than 1%.
View Article and Find Full Text PDF