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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 12 — Jun. 16, 2014
  • pp: 14096–14100

Spectral response modification of TiO2 MSM photodetector with an LSPR filter

Deniz Çalışkan, Bayram Bütün, Şadan Özcan, and Ekmel Özbay  »View Author Affiliations


Optics Express, Vol. 22, Issue 12, pp. 14096-14100 (2014)
http://dx.doi.org/10.1364/OE.22.014096


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Abstract

We fabricated UVB filtered TiO2 MSM photodetectors by the localized surface plasmon resonance effect. A plasmonic filter structure was designed using FDTD simulations. Final filter structure was fabricated with Al nano-cylinders with a 70 nm radius 180 nm period on 360 nm SiO2 film. The spectral response of the TiO2 MSM photodetector was modified and the UVB response was reduced by approx. 60% with an LSPR structure, resulting in a peak responsivity shift of more than 40 nm. To our knowledge, this is the first published result for the spectral response modification of TiO2 photodetectors with LSPR technique.

© 2014 Optical Society of America

OCIS Codes
(040.5160) Detectors : Photodetectors
(040.7190) Detectors : Ultraviolet
(250.5403) Optoelectronics : Plasmonics
(050.6624) Diffraction and gratings : Subwavelength structures

ToC Category:
Detectors

History
Original Manuscript: April 3, 2014
Revised Manuscript: May 15, 2014
Manuscript Accepted: May 26, 2014
Published: June 2, 2014

Citation
Deniz Çalışkan, Bayram Bütün, Şadan Özcan, and Ekmel Özbay, "Spectral response modification of TiO2 MSM photodetector with an LSPR filter," Opt. Express 22, 14096-14100 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-12-14096


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References

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