Patent ID: 8785905
Filing Date: 2014-07-22
Classification: B82Y,H01L,Y10S

Abstract:
1. A light-emitting diode, comprising: a substrate having a frontside and a backside; an n-type base grown on the frontside of the substrate; a core-shell structure on the n-type base, comprising an array of vertically aligned faceted n-type nanowire cores, each core surrounded by a radially grown Group III-nitride multiple quantum well shell layer providing a core-shell nanowire; a p-type canopy layer grown on all crystal facets of the core-shell nanowires, and that is coalesced at the top providing a continuous top surface, wherein the top surface of the canopy layer is faceted on a plurality of crystal planes of the nanowire cores, thereby providing a continuous film that electrically connects the tops and sides of all the nanowires, further providing a void between adjacent n-type nanowire cores and between the continuous top surface and the n-type base; and a p-contact to the p-type canopy layer and an n-contact to the n-type base for applying a voltage across the core-shell structure and extracting electroluminescent emitted light therefrom.