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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 35, Iss. 20 — Oct. 15, 2010
  • pp: 3402–3404

Enhanced light absorption of TiO 2 in the near-ultraviolet band by Au nanoparticles

Shu-Ya Du and Zhi-Yuan Li  »View Author Affiliations


Optics Letters, Vol. 35, Issue 20, pp. 3402-3404 (2010)
http://dx.doi.org/10.1364/OL.35.003402


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Abstract

We propose a scheme to enhance near-UV band absorption of a rutile TiO 2 nanoparticle by placing Au nanoparticles in its neighborhood. The discrete-dipole approximation method was employed to calculate the absorption spectrum of pure rutile TiO 2 and that of TiO 2 mixed with Au nanoparticles. The results indicate that pure rutile TiO 2 has its maximum absorption located in the deep-UV band. With the existence of Au nanoparticles, a significant light harvesting effect occurs, and this maximum shifts to the near-UV band, where usual excitation wavelength falls.

© 2010 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(290.5850) Scattering : Scattering, particles

ToC Category:
Scattering

History
Original Manuscript: September 1, 2010
Manuscript Accepted: September 10, 2010
Published: October 8, 2010

Citation
Shu-Ya Du and Zhi-Yuan Li, "Enhanced light absorption of TiO2 in the near-ultraviolet band by Au nanoparticles," Opt. Lett. 35, 3402-3404 (2010)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-35-20-3402


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