Ultrahigh-Efficiency Microcavity Photonic Crystal LEDs
Investigating Organization
Sandia National Laboratories
Principal Investigator(s)
Mr. Arthur Fischer
Subcontractor
None
Funding Source
Building Technologies Program/NETL
Award
DOE Share: $1,200,000
Contract Period
09/01/04 - 12/31/06
The objective of this work is to design, fabricate and test 400 nm - 460 nm InGaN microcavity photonic crystal (PX) LEDs. Enhanced light extraction will be achieved through the use of a planar cavity based on a conducting GaN/AlGaN epitaxial distributed Bragg reflector in conjunction with a two-dimensional photonic lattice. The objective of phase I is to demonstrate improved brightness of top-emitting microcavity PX-LEDs compared to planar control LEDs. The objective of phase II is to demonstrate a flip chip microcavity PX-LED with an external quantum efficiency 2x greater than planar control LEDs.