Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection

Azzouz Sellai, P. G. McCafferty, Paul Dawson, S. H. Raza, Harold S. Gamble

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Excitation of surface plasmons by attenuated total reflection is used to optically characterize platinum silicide films and to produce enhanced photosignals from PtSi-Si Schottky barrier devices. In this work the Otto configuration (prism-air gap-sample) for attenuated total reflection is used to excite the mode at the air-PtSi interface on PtSi-Si structures; surface plasmon excitation is evidenced as a prominent dip in measurement of reflectance as a function of internal angle of incidence in the prism. Coupling efficiencies of 90 - 95% between incoming p-polarized radiation and surface plasmons on PtSi have been achieved at wavelengths ranging from the visible to the infrared (0.633 μm to 3.39 μm). The surface plasmon energy is dissipated by absorption through the creation of electron-hole pairs in the lossy silicide layer. Subsequent hot carrier emission over the Schottky barrier can thus yield an enhanced photosignal associated with the enhanced absorption due to surface plasmon excitation - initial results demonstrating this phenomenon are reported. here. Finally, reflectivity calculations show also the possibility of infrared surface plasmon excitation in PtSi grating structures with periodicity of the same order as the wavelength.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsWagih H. Makky
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Pages240-249
Number of pages10
Volume1735
ISBN (Print)0819409081
Publication statusPublished - 1992
EventInfrared Detectors: State of the Art - San Diego, CA, USA
Duration: Jul 19 1992Jul 19 1992

Other

OtherInfrared Detectors: State of the Art
CitySan Diego, CA, USA
Period7/19/927/19/92

Fingerprint

Plasmons
plasmons
Infrared radiation
Prisms
prisms
excitation
reflectance
Wavelength
polarized radiation
Hot carriers
air
Air
wavelengths
Platinum
periodic variations
platinum
incidence
gratings
Radiation
Electrons

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Sellai, A., McCafferty, P. G., Dawson, P., Raza, S. H., & Gamble, H. S. (1992). Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection. In W. H. Makky (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 1735, pp. 240-249). Publ by Society of Photo-Optical Instrumentation Engineers.

Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection. / Sellai, Azzouz; McCafferty, P. G.; Dawson, Paul; Raza, S. H.; Gamble, Harold S.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Wagih H. Makky. Vol. 1735 Publ by Society of Photo-Optical Instrumentation Engineers, 1992. p. 240-249.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Sellai, A, McCafferty, PG, Dawson, P, Raza, SH & Gamble, HS 1992, Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection. in WH Makky (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 1735, Publ by Society of Photo-Optical Instrumentation Engineers, pp. 240-249, Infrared Detectors: State of the Art, San Diego, CA, USA, 7/19/92.
Sellai A, McCafferty PG, Dawson P, Raza SH, Gamble HS. Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection. In Makky WH, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 1735. Publ by Society of Photo-Optical Instrumentation Engineers. 1992. p. 240-249
Sellai, Azzouz ; McCafferty, P. G. ; Dawson, Paul ; Raza, S. H. ; Gamble, Harold S. / Surface plasmons on PtSi for visible and infrared Schottky-barrier-enhanced detection. Proceedings of SPIE - The International Society for Optical Engineering. editor / Wagih H. Makky. Vol. 1735 Publ by Society of Photo-Optical Instrumentation Engineers, 1992. pp. 240-249
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