| abstract |
A laser pyrolysis reactor design and a corresponding reactant inlet nozzle are described to enable desired particle quenching particularly suitable for the synthesis of elemental silicon particles. In particular, the nozzle uses an inert gas based on a substantially inert gas stream surrounding the reactant precursor stream and substantially surrounds the reactant precursor stream and the quench gas stream. A large inert entrainment flow can be used to have a design to promote nucleation and quenching. Improved silicon nanoparticle inks having silicon nanoparticles that have not been surface modified with organic compounds are described. Silicon ink properties can be designed for specific printing applications such as inkjet printing, gravure printing, or screen printing. A preferred processing method has been described that provides flexibility for ink design without surface modification of the silicon nanoparticles. [Selection] Figure 20 |