TITLE

Electrically driven nanopyramid green light emitting diode

AUTHOR(S)
Chang, S.-P.; Chen, Y.-C.; Huang, J.-K.; Cheng, Y.-J.; Chang, J.-R.; Sou, K.-P.; Kang, Y.-T.; Yang, H.-C.; Hsu, T.-C.; Kuo, H.-C.; Chang, C.-Y.
PUB. DATE
February 2012
SOURCE
Applied Physics Letters;2/6/2012, Vol. 100 Issue 6, p061106
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
An electrically driven nanopyramid green light emitting diode (LED) was demonstrated. The nanopyramid arrays were fabricated from a GaN substrate by patterned nanopillar etch, pillar side wall passivation, and epitaxial regrowth. Multiple quantum wells were selectively grown on the facets of the nanopyramids. The fabricated LED emits green wavelength under electrical injection. The emission exhibits a less carrier density dependent wavelength shift and higher internal quantum efficiency as compared with a reference c-plane sample at the same wavelength. It shows a promising potential for using nanopyramid in high In content LED applications.
ACCESSION #
71531825

 

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