Light-emitting diode with textured substrate

摘要

A light-emitting diode (LED) device is provided. The LED device has raised semiconductor regions formed on a substrate. LED structures are formed over the raised semiconductor regions such that bottom contact layers and active layers of the LED device are conformal layers. The top contact layer has a planar surface. In an embodiment, the top contact layers are continuous over a plurality of the raised semiconductor regions while the bottom contact layers and the active layers are discontinuous between adjacent raised semiconductor regions.

主权项

1. An apparatus, comprising:
a substrate; a patterned dielectric mask layer disposed over the substrate, wherein the patterned dielectric mask layer defines a plurality of openings; a plurality of raised regions disposed over the substrate and within the openings, wherein the raised regions each have a non-planar upper surface; a plurality of III-N compound components that are each disposed over the non-planar upper surface of a respective one of the raised regions, wherein the III-N compound components each have a first type of conductivity; a plurality of multiple-quantum well (MQW) components that are each disposed over a respective one of the III-N compound components; and a III-N compound layer disposed over the MQW components and over the patterned dielectric mask layer, wherein the III-N compound layer has a second type of conductivity different from the first type.