Demonstration of ultra-small (0.2%) for mini-displays
Abstract
Ultra-small red micro-LEDs (μm) with measurable output power have proved difficult to demonstrate. The smallest state-of-the-art red micro-LEDs (AlInGaP) to have exhibited a decent output power of ∼1.75 mW mm−2 are 20 μm × 20 μm in dimension. InGaN-based red micro-LED development has primarily been impeded due to the large lattice mismatch between the substrate and the quantum wells along with fabrication challenges such as low damage etching. In this work, we demonstrate 6 μm × 6 μm sized InGaN red micro-LEDs with an on-wafer external quantum efficiency of 0.2% and light output power reaching 2.1 mW mm−2.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Dec 16, 2020
- Source ID
- 10.35848/1882-0786/abd06f
Entities
People
- Chirag Gupta
- Matthew S. Wong
- Michael J. Gordon
- Ryan Ley
- S. Keller
- Shubhra S Pasayat
- Shuji Nakamura
- Steven P. DenBaars
- Umesh Mishra
Organizations
- Office of Naval Research
- Solid State Lighting and Energy Electronics Center, University of California Santa Barbara