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      LSPR enhanced MSM UV photodetectors

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      Author
      Butun, S.
      Cinel, N. A.
      Özbay, Ekmel
      Date
      2012-10-18
      Source Title
      Nanotechnology
      Print ISSN
      0957-4484
      Publisher
      IOP Publishing
      Volume
      23
      Issue
      44
      Pages
      444010-1 - 444010-5
      Language
      English
      Type
      Article
      Item 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-nanoparticles
      Enhanced 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
      Permalink
      http://hdl.handle.net/11693/21263
      Published Version (Please cite this version)
      http://dx.doi.org/10.1088/0957-4484/23/44/444010
      Collections
      • Department of Electrical and Electronics Engineering 3613
      • Department of Physics 2345
      • Nanotechnology Research Center (NANOTAM) 1038
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