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Proceedings Paper

Focused ion beam nano patterning for fabrications of III-nitride light emitting diodes
Author(s): M. Y. Kim; Y. C. Park; S. S. Hong; B. K. Kim; D. W. Kim; D. Y. Lee
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Paper Abstract

Photonic device structures often require nano scale lithography techniques for their device fabrication. The techniques are electron beam lithography and FIB(focused ion beam) pattering. Focused ion beam etching has been used as a nanolithography tool for the creation of these nanostructures without mask. We obtain nano scale mesa patterns on InGaN/GaN LED(light emitting diodes) wafer using focused ion beam and characterized. The InGaN/GaN LED wafer was grown by molecular organic vapor deposition (MOCVD). To reduce the surface damage during FIB patterning, we used a dielectric mask layer and wet etching to eliminate re-deposition of sputtering materials and Ga+ ion implantations and ion damage layer during FIB patterning, and finally, removed SiO2 with wet etching. A metal thin layer was deposited by an ion beam sputter to avoid charging effects during FIB patterning. We obtain a 2-Dimensional patterning for the fabrication of the high brightness LEDs. This FIB pattering technique can be applied to nanofabrication optoelectronic devices.

Paper Details

Date Published: 29 March 2007
PDF: 6 pages
Proc. SPIE 6517, Emerging Lithographic Technologies XI, 65171M (29 March 2007); doi: 10.1117/12.710795
Show Author Affiliations
M. Y. Kim, Samsung Electro-Mechanics (South Korea)
Y. C. Park, Samsung Electro-Mechanics (South Korea)
S. S. Hong, Samsung Electro-Mechanics (South Korea)
B. K. Kim, Samsung Electro-Mechanics (South Korea)
D. W. Kim, Samsung Electro-Mechanics (South Korea)
D. Y. Lee, Samsung Electro-Mechanics (South Korea)

Published in SPIE Proceedings Vol. 6517:
Emerging Lithographic Technologies XI
Michael J. Lercel, Editor(s)

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