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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 24 — Nov. 21, 2011
  • pp: 24286–24297

Superior local conductivity in self-organized nanodots on indium-tin-oxide films induced by femtosecond laser pulses

Chih Wang, Hsuan-I Wang, Wei-Tsung Tang, Chih-Wei Luo, Takayoshi Kobayashi, and Jihperng Leu  »View Author Affiliations

Optics Express, Vol. 19, Issue 24, pp. 24286-24297 (2011)

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Large-area surface ripple structures of indium-tin-oxide films, composed of self-organized nanodots, were induced by femtosecond laser pulses, without scanning. The multi-periodic spacing (∼800 nm, ∼400 nm and ∼200 nm) was observed in the laser-induced ripple of ITO films. The local conductivity of ITO films is significantly higher, by approximately 30 times, than that of the as-deposited ITO films, due to the formation of these nanodots. Such a significant change can be ascribed to the formation of indium metal-like clusters, which appear as budges of ∼ 5 nm height, due to an effective volume increase after breaking the In-O to form In-In bonding.

© 2011 OSA

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(220.4241) Optical design and fabrication : Nanostructure fabrication

ToC Category:
Laser Microfabrication

Original Manuscript: August 31, 2011
Revised Manuscript: October 23, 2011
Manuscript Accepted: October 24, 2011
Published: November 14, 2011

Chih Wang, Hsuan-I Wang, Wei-Tsung Tang, Chih-Wei Luo, Takayoshi Kobayashi, and Jihperng Leu, "Superior local conductivity in self-organized nanodots on indium-tin-oxide films induced by femtosecond laser pulses," Opt. Express 19, 24286-24297 (2011)

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