Patent · US Active

Light-emitting assembly having a semiconductor layer sequence having an active zone on a columnar structure

US9531161B2 · kind B2 · utility

3Cited by

0References

18Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Jelena Ristic · Regensburg, DE
Martin Straβburg · Donaustauf, DE
Martin Mandl · Lappersdorf, DE
Alfred Lell · Maxhütte-Haidhof, DE

Key dates

Filing date	Apr 17, 2014
Grant date	Dec 27, 2016
Priority date	—
Expiry date	Apr 17, 2034

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/036
WIPO fieldOptics
WIPO sectorInstruments

Abstract

An assembly has a columnar structure arranged with one end on a substrate, wherein the structure is at least partly covered with a semiconductor layer structure having an active zone that generates electromagnetic radiation, the active zone has a band gap for a radiative recombination, and the band gap decreases along a longitudinal axis of the structure in a direction of a free end of the structure such that a diffusion of charge carriers in the direction of the free end of the structure and a radiative recombination of charge carrier pairs in the region of the free end of the structure are supported.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.