Silicon/germanium nanoparticles and inks having low metal contamination

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United States of America Patent

PATENT NO 9006720
APP PUB NO 20130221286A1
SERIAL NO

13858240

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
NANOGRAM CORPORATIONMILPITAS CA 95035

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Altman, Igor Fremont, US 10 81
Chiruvolu, Shivkumar San Jose, US 56 1135
Frey, Bernard M Livermore, US 11 137
Li, Weidong San Jose, US 97 1065
Liu, Guojun San Jose, US 44 695
Lynch, Robert B Livermore, US 13 392
Pengra-Leung, Gina Elizabeth San Jose, US 5 42
Srinivasan, Uma Mountain View, US 51 782

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