Silicon/germanium nanoparticles and inks having low metal contamination
US9006720B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2013 |
| Grant date | Apr 14, 2015 |
| Priority date | — |
| Expiry date | Apr 8, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Laser pyrolysis reactor designs and corresponding reactant inlet nozzles are described to provide desirable particle quenching that is particularly suitable for the synthesis of elemental silicon particles. In particular, the nozzles can have a design to encourage nucleation and quenching with inert gas based on a significant flow of inert gas surrounding the reactant precursor flow and with a large inert entrainment flow effectively surrounding the reactant precursor and quench gas flows. Improved silicon nanoparticle inks are described that has silicon nanoparticles without any surface modification with organic compounds. The silicon ink properties can be engineered for particular printing applications, such as inkjet printing, gravure printing or screen printing. Appropriate processing methods are described to provide flexibility for ink designs without surface modifying the silicon nanoparticles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.