| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Plasmonics in Nanocomposite Materials
|
| Presentation Title |
Fin p-n Heterojunctions for High Brightness Light Emitting Diodes and Lasers at Sub-micron Scale |
| Author(s) |
Babak Nikoobakht, Robin Hansen, Yuqin Zong, Amit Agrawal, Michael Shur, Jerry Tersoff |
| On-Site Speaker (Planned) |
Babak Nikoobakht |
| Abstract Scope |
“Efficiency droop” is a decline in brightness of light emitting diodes (LEDs) as electrical current density is raised. This phenomenon has limited the performance of all commercial LEDs. It has also capped the output power of sub-micron LEDs and lasers to nanowatts. In this presentation, I will discuss a fin shape heterojunction architecture that eliminates the droop effect and results in high brightness point sources with a microwatt power range exceeding the output power of any previous electrically-driven sub-micron LED or laser pixel by 100 to 1000 times. Results will be presented on the impact of fin shape on electron-hole recombination and how it impacts the rate of non-radiative Auger recombination at extreme high current densities. Results suggest further refinement of this design is expected to enable a new generation of high brightness LED and laser pixels for macroscale and miniaturized applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Electronic Materials, Nanotechnology, Characterization |