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Title: Design and demonstration of efficient transparent 30% Al-content AlGaN interband tunnel junctions
Ultra-violet (UV) light emitting diodes operating at 339 nm using transparent interband tunnel junctions are reported. Tunneling-based ultraviolet light emitting diodes were grown by plasma-assisted molecular beam epitaxy on 30% Al-content AlGaN layers. A low tunnel junction voltage drop is obtained through the use of compositionally graded n and p-type layers in the tunnel junction, which enhance hole density and tunneling rates. The transparent tunnel junction-based UV LED reported here show a low voltage drop of 5.55 V at 20 A/cm2 and an on-wafer external quantum efficiency of 1.02% at 80 A/cm2.  more » « less
Award ID(s):
2034140
PAR ID:
10456030
Author(s) / Creator(s):
; ; ; ; ;
Date Published:
Journal Name:
Applied Physics Letters
Volume:
122
Issue:
8
ISSN:
0003-6951
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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