Analysis of silicon@ particles for impurities by conversion to monocrystal - by placing in silicon@ vessel and treatment in floating zone to increase sensitivity

摘要

Analysis of the concn. of impurities in Si particles (I) involves (a) placing (I) in a Si vessel (II); (B) making (I) and (II) into monocrystalline Si (III) in a floating zone; and (c) determining the concn. of impurities present in (III). Prodn. of (III) from (I) involves (a) placing (I) in (II) and (b) treatment of (I) and (II) in a floating zone. USE/ADVANTAGE - For the analysis of trace impurities and gives reproducible results, since (III) is more suitable than (I) for analysis by sensitive techniques. The technique can also be used for purifying the Si by using a moving heat source.