Enhanced localized surface plasmon resonance obtained in two step etched silicon nanowires decorated with silver nanoparticles

Date

2013-09-30

Author

Mulazimoglu, Emre
Nogay, Gizem
Turan, Raşit
Ünalan, Hüsnü Emrah

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We report on localized surface plasmon resonance (LSPR) of silicon nanowires decorated with silver nanoparticles. Hydrogen peroxide in metal-assisted-etching method degenerates the surface of nanowires and creates oxygen-related defect sites. These defect sites enhance the infrared absorption at higher frequencies and emit visible light by band-to-band radiative recombination. Moreover, an almost 50-fold enhanced LSPR was obtained for 24 nm thick silver deposited 5 mu m long silicon nanowires. This enhancement was attributed to the change in the dielectric constant of effective medium created by defect states. LSPR wavelength could be tuned by changing the silver particle size and nanowire length. (C) 2013 AIP Publishing LLC.

Subject Keywords

Porous silicon, Optical properties, Raman scattering, Solar cells, Polarization, Absorption, Photoluminescence, Luminescence, Biosensors, Origin

URI

https://hdl.handle.net/11511/48637

Journal

APPLIED PHYSICS LETTERS

DOI

https://doi.org/10.1063/1.4824646

Collections

Department of Physics, Article

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Citation Formats

E. Mulazimoglu, G. Nogay, R. Turan, and H. E. Ünalan, “Enhanced localized surface plasmon resonance obtained in two step etched silicon nanowires decorated with silver nanoparticles,” APPLIED PHYSICS LETTERS, pp. 0–0, 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/48637.