Patent ID: 11923418
Assignee: ATOMERA INCORPORATED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC H

Claim 0:
1. A semiconductor device comprising:
a first single crystal silicon layer having a first percentage of silicon 28;
a second single crystal silicon layer having a second percentage of silicon 28 higher than the first percentage of silicon 28, the second single crystal silicon layer being thinner than the first single crystal silicon layer; and
a superlattice between the first and second single crystal silicon layers, the superlattice comprising a plurality of stacked groups of layers, each group of layers comprising a plurality of stacked base silicon monolayers defining a base silicon portion, and at least one non-semiconductor monolayer constrained within a crystal lattice of adjacent base silicon portions;
wherein the first percentage of silicon 28 is less than 93 percent, and the second percentage of silicon 28 is greater than 95 percent.