LATTICE-CONSTANT FORMATTED EPITAXIAL TEMPLATE FOR LIGHT EMITTING DEVICES AND A METHOD FOR MAKING THE SAME

摘要

A lattice constant formatted epitaxial template for light emitting devices includes a starting epitaxial template having a base, a plurality of alternately arranged protrusions and depressions on the base; first material portions epitaxially formed on top of the protrusions and second material portions epitaxially formed in the depressions, wherein lattice constants of the first material portions on the protrusions are different from those of the second material portions in the depressions. A method for making a lattice constant formatted epitaxial template is provided. Also provided is a light emitting device containing a lattice constant formatted epitaxial template.

主权项

1. A light emitting device comprising:
an n-type layer; a p-type layer; an active region sandwiched between the n-type layer and the p-type layer; and a lattice constant formatted epitaxial template; wherein the lattice constant formatted epitaxial template has a growing surface on which the n-type layer grows, and the growing surface comprises a plurality of first material portions and a plurality of second material portions with each of the first material portions being alternately arranged with each of the second material portions, and wherein lattice constants of the first material portions are different from those of the second material portions.