A Model for the Growth of Silicon Particles from Laser-Heated Gases

Laser-synthesized silicon powder is spherical and nonagglomerated when produced under proper conditions. Otherwise it consists of agglomerates of very small particles or fused aggregates of larger particles. A synthesis model has been developed that includes silane decomposition kinetics, interdiffu...

Full description

Saved in:
Bibliographic Details
Published in:Aerosol science and technology 1990-01, Vol.13 (1), p.72-84
Main Authors: Flint, John H., Haggerty, John S.
Format: Article
Language:English
Subjects:
Chemistry
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Laser-synthesized silicon powder is spherical and nonagglomerated when produced under proper conditions. Otherwise it consists of agglomerates of very small particles or fused aggregates of larger particles. A synthesis model has been developed that includes silane decomposition kinetics, interdiffusion of reactant and annular gases, particle growth by collision coalescence of Si droplets, and a measured temperature distribution. Predicted particle size distributions agree closely with a measured distribution. Variation in the growth time for different flow streams primarily broadens the mass distribution, whereas intermixing of the silane flow with the annular gas primarily broadens the number distribution.
ISSN:0278-6826
1521-7388
DOI:10.1080/02786829008959425