Light emitting devices including tunnel junctions
US6822991B2 · kind B2 · utility
38Cited by
9References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2002 |
| Grant date | Nov 23, 2004 |
| Priority date | — |
| Expiry date | Sep 30, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/841
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A light emitting device includes a first active region, a second active region, and a tunnel junction. The tunnel junction includes a layer of first conductivity type and a layer of second conductivity type, both thinner than a layer of first conductivity type and a layer of second conductivity type surrounding the first active region. The tunnel junction permits vertical stacking of the active regions, which may increase the light generated by a device without increasing the size of the source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.