Light emitting device processes
Light-emitting devices, and related components, processes, systems and methods are disclosed.
1. A method comprising:
providing a submount connected to a substrate via a plurality of mesas including a semiconductor layer, at least some of the mesas including a quantum well containing region;
at least partially decomposing portions of the semiconductor layer on a mesa by mesa basis;
separating the substrate from at least one of the mesas to expose an upper surface of at least one of the mesas; and
processing the upper surface of at least one of the mesas by, at least, patterning the upper surface of at least one of the mesas.
2. The method of claim 1 , wherein providing the submount attached to the substrate includes:
providing a substrate including a semiconductor layer and a plurality of device layers;
etching the device layers to form a plurality of mesas; and
bonding the substrate to a submount.
3. The method of claim 1 , wherein at least partially decomposing the semiconductor layer includes sequentially exposing the semiconductor layer of each of the plurality of mesas to electromagnetic radiation.
4. The method of claim 3 , wherein exposing the semiconductor layer of each of the plurality of mesas to electromagnetic radiation includes determining a beam size of the electromagnetic radiation.
5. The method of claim 4 , wherein determining a beam size includes matching the beam size to a size of a particular one of the mesas.
6. The method of claim 4 , wherein determining a beam size includes matching the beam shape to a shape of a particular one of the mesas.
7. The method of claim 3 , further comprising, before exposing the substrate to the electromagnetic radiation, passing the electromagnetic radiation through a mask.
8. The method of claim 1 , wherein the portions of the substrate are sequentially at least partially decomposed on a mesa-by-mesa basis.
9. The method of claim 1 , wherein the portions of the substrate are at least partially decomposed on a mesa-by-mesa basis.
10. The method of claim 1 , further comprising:
forming a light emitting device from the at least one of the mesas.
11. The method of claim 1 , wherein patterning a surface of at least one of the mesas includes:
depositing a resist material on at least some of the plurality of mesas; and
imprinting the resist material using a mold.
12. The method of claim 11 , wherein the mold is a flexible mold.
13. The method of claim 1 , wherein patterning a surface of at least one of the mesas includes:
forming an array of self-assembled nano-particles on the surface of at least some of the mesas.
14. The method of claim 13 , wherein the self-assembled nano-particles include polystyrene beads.
15. The method of claim 14 , further comprising:
depositing a material onto the mesas and the nano-particles; and
removing the nano-particles and portions of the material supported by the nano-particles.
16. The method of claim 1 , comprising separating the substrate from a plurality of the mesas and patterning the upper surfaces of a plurality of the mesas.
17. The method of claim 1 , wherein processing the upper surface of at least one of the mesas includes removing residue from the upper surface prior to patterning the upper surface of at least one of the mesas.
18. The method of claim 1 , wherein patterning the upper surface of at least one of the mesas comprises forming a plurality of holes in the upper surface.
19. The method of claim 1 , wherein patterning the upper surface of at least one of the mesas enhances light extraction through the upper surface.