Apparatus for dendritic web growth systems

Patent · Tue Nov 22 04:00:00 EST 1988

OSTI ID:6421818

Hundal, R; Seidensticker, R G; McHugh, J P

This patent describes an apparatus for growing dendritic web crystals comprising: a. a susceptor; b. a crucible for melting silicon, the crucible nesting within the susceptor; c. a sublid positioned above the susceptor and crucible, the sublid having upper and lower horizontal surfaces, the sublid further having a slot through which a dendritic web crystal may be pulled, the slot defining at least one inner surface in the sublid; d. a susceptor lid having an upper horizontal surface and a lower horizontal surface, the susceptor lid further having a slot through which a dendritic web crystal may be pulled, the susceptor lid further having a lip disposed downwardly from the susceptor lid lower horizontal surface, the lip extending continuously and peripherally around the susceptor lid slot and having an outer surface facing the inner surface of the sublid, the susceptor lid lower horizontal surface facing the sublid upper horizontal surface; e. the susceptor lid being positioned above the sublid such that the lip of the susceptor lid fits substantially concentrically within the sublid slot, and providing insulating space between the upper horizontal surface of the sublid and the lower horizontal surface of the susceptor lid and between the outer surface of the susceptor lid lip and the inner surface of the sublid.

• Assignee: Dept. of Energy, Washington, DC
• Patent Number(s): US 4786479
• OSTI ID: 6421818
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360102 -- Metals & Alloys-- Structure & Phase Studies
CLOSURES
CONTAINERS
CRUCIBLES
CRYSTAL GROWTH
CRYSTAL GROWTH METHODS
DENDRITIC WEB GROWTH METHOD
ELEMENTS
EQUIPMENT
MELTING
PHASE TRANSFORMATIONS
SEALS
SEMIMETALS
SILICON