Patents
US 12772616 B2: III-nitride p—n junction device using porous layer
- Granted
- 2026-10-20
- Filed
- 2021-01-21 application 17794182
- Type
- Utility · 22 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
A p-n junction based III-nitride device in which the p-type layers adjacent to the n-type layers are activated by thermal annealing with a porous n-type tunnel junction layer or layers. The porosity of the n-type tunnel junction layer(s) allows for gas exchange to occur, allowing efficient p-type nitride semiconductor activation. This porosification and activation step can be inserted wherever desired into an existing fabrication process for an LED, laser diode, or any other nitride semiconductor device. In one example, the device comprises multiple LED structures grown successively, separated by tunnel junctions and the buried p-type layers are activated by thermal annealing with adjacent porous n-type layers. Using this method, efficient monolithic multi-color LEDs can be formed.
Source: PTBLXML, file of 2026-10-20 (ipgb20261020.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| THE REGENTS OF THE UNIVERSITY OF CALIFORNIA 8,781 patents | US company or organization | Oakland, CA | REGENTS OF THE UNIVERSITY OF CALIFORNIA State business registration FUZZY medium confidence: same name (legal endings aside) and state | PTBLXML, file of 2026-10-20 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Christian J. Zollner | Goleta, CA | 5 | PTBLXML, file of 2026-10-20 | |
| Shuji Nakamura | Santa Barbara, CA | 243 | PTBLXML, file of 2026-10-20 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| H10H | Inorganic light-emitting semiconductor devices having potential barriers | H10H20/825 | PTBLXML, file of 2026-10-20 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.