Building nanostructures with plasmas”
Prof. Uros Cvelbar (Joseph Stephan Institute, Slovenia)
Nanostructured materials like nanowires, nanotubes, etc. present key building units for improved energy harvesting devices, sensors, biomedicine and other high tech devices. These materials have shown superior performance compared to thin films, and for this reason it is highly important to explore new low-cost and effective ways for building them. In this context, plasmas can play a significant role of mediator for designing nanostructures. The gaseous plasma-material interface conditions are the ones which influence material morphology, crystallinity, size, distribution over the surface, quality and time of growth. This will be presented for the growth of nanowires in different plasma discharges. Plasma growth of nanowires will be compared to other growth methods like wet-chemical, thermal, CVD, etc. synthesis methods. Moreover, the properties of plasma-grown nanowires will be demonstrated and compared in dye-solar and close-loop energy cells.