Method of producing thin single-crystal sheets

Details Method of producing thin single-crystal sheets Method of producing thin single-crystal sheets

1980-03-04

1982-08-24

Bernstein, Hiram

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156624, 156DIG66, 156DIG80, 136252, C30B 3300

Patent

active

043459676

ABSTRACT:
A method of producing thin single-crystal sheets is disclosed. A thin single-crystal layer is formed on a substrate, with the material of the layer having a different absorption coefficient for laser radiation than does the material of the substrate at their interface. The laser radiation is focused into a region contiguous to the interface and extending the width of the interface, and is swept across the entire interface region. The energy that is absorbed from the laser radiation in the focus region liquifies material in this region. The layer is progressively separated from the substrate as the laser radiation is swept across the interface, until the entire layer is separated from the substrate. The method is applicable to the production of thin single-crystal sheets of semiconductor material which may be used, for example, in the manufacture of solar cells or integrated circuits.

REFERENCES:
patent: 3370980 (1968-02-01), Anderson
patent: 3585088 (1971-06-01), Schwuttke et al.
patent: 3993533 (1976-11-01), Milnes et al.
patent: 4027053 (1977-05-01), Lesk
patent: 4116751 (1978-09-01), Zaromb

Affiliated with

Also associated with

Rating

Method of producing thin single-crystal sheets does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of producing thin single-crystal sheets, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing thin single-crystal sheets will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1435925