LSPR enhanced MSM UV photodetectors
Author
Butun, S.
Cinel, N. A.
Özbay, Ekmel
Date
2012-10-18Source Title
Nanotechnology
Print ISSN
0957-4484
Publisher
IOP Publishing
Volume
23
Issue
44
Pages
444010-1 - 444010-5
Language
English
Type
ArticleItem Usage Stats
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Abstract
We fabricated localized surface plasmon resonance enhanced UV photodetectors on MOCVD grown semi-insulating GaN. Plasmonic resonance in the UV region was attained using 36nm diameter Al nanoparticles. Extinction spectra of the nanoparticles were measured through spectral transmission measurements. A resonant extinction peak around 300nm was obtained with Al nanoparticles. These particles gave rise to enhanced absorption in GaN at 340nm. Spectral responsivity measurements revealed an enhancement factor of 1.5. These results provided experimental verification for obtaining field enhancement by using Al nanoparticles on GaN.
Keywords
Al-nanoparticlesEnhanced absorption
Enhancement factor
Experimental verification
Extinction spectra
Field enhancement
Localized surface plasmon resonance
Plasmonic
Semi-insulating GaN
Spectral responsivity
Spectral transmission
UV photodetectors
UV region
Aluminum
Gallium nitride
Photodetectors
Photons
Surface plasmon resonance
Nanoparticles