Chemical apparatus and process disinfecting – deodorizing – preser – Chemical reactor – Including specific material of construction
Patent
1987-12-31
1990-04-24
Straub, Gary P.
Chemical apparatus and process disinfecting, deodorizing, preser
Chemical reactor
Including specific material of construction
1566171, 1566204, 156DIG88, 156DIG64, 156608, 156609, 156DIG97, 156605, 422245, 422248, 51309, C30B 3500
Patent
active
049199013
ABSTRACT:
This invention delineates a multiple barrier design for separating the feed compartment (12) from the growth compartment (13) in crucibles (10) used for silicon dendritic web growth. The use of the barrier design greatly reduces the thermal interaction between the two compartments permitting larger replenishment rates without adverse effect on crystal growth. Its novelty lies in having a primary and secondary barrier (15,16) spaced apart from one another such that there exists a space (22) between the barriers (15,16) which is devoid of liquid silicon thus reducing the thermal conductance of the combination.
REFERENCES:
patent: 4289571 (1981-09-01), Jewett
patent: 4389377 (1983-06-01), Duncan et al.
patent: 4659421 (1987-04-01), Jewett
patent: 4698120 (1987-10-01), Higginbotham
Duncan, et al., Development of Processes for the Production of Low Cost Silicon Dendritic Web for Solar Cells, IEEE, (1980), 25-30.
Seidensticker and Hopkins, "Silicon Ribbon Growth by the Dendritic Web Process," Journal of Crystal Growth 50, (1980), 221-235.
Seidensticker, et al., "Computer Modeling of Dendritic Web Growth Processes and Characterization of the Material," (1978). 358-362.
Duncan Charles S.
Kochka Edgar L.
Seidensticker Raymond G.
Franklin M.
Straub Gary P.
Westinghouse Electric Corp.
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