Wafer construction for making single-crystal semiconductor devic

Details Wafer construction for making single-crystal semiconductor devic Wafer construction for making single-crystal semiconductor devic

1984-01-27

1985-10-29

Ozaki, George T.

Metal treatment

Barrier layer stock material, p-n type

148 15, 148171, 148172, 75 65ZM, 156624, 428620, H01L 2328, H01L 2120

Patent

active

045499136

ABSTRACT:
Seed crystals are made in a region of a polycrystalline layer on a substrate by melting the region and then cooling it so that it solidifies from one end to the other in a first direction and outwardly toward the edges in a second direction normal to the first direction. The desired cooling pattern is established by providing a thermal layer under the polycrystalline layer, which thermal layer is used to provide different rates of heat conduction therethrough in different parts of the thermal layer. A large, single-crystal device can be made by providing an operating layer of polycrystalline material in contact with the seed, melting the operating layer and recrystallizing it so that its solidification proceeds from the seed. The thermal layer can be used to ensure the desired direction of resolidification by providing different rates of heat conduction therethrough in different parts of the thermal layer.

REFERENCES:
patent: 3518503 (1970-06-01), Doo
patent: 3585088 (1971-06-01), Schwuttke et al.
patent: 4059461 (1977-11-01), Fan et al.
patent: 4187126 (1980-02-01), Radd et al.
patent: 4371421 (1983-02-01), Fan et al.
patent: 4381201 (1983-04-01), Sakurai
patent: 4395433 (1983-07-01), Nagakubo et al.
patent: 4406709 (1983-09-01), Celler et al.

Affiliated with

Also associated with

Rating

Wafer construction for making single-crystal semiconductor devic does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Wafer construction for making single-crystal semiconductor devic, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Wafer construction for making single-crystal semiconductor devic will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-727155