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

Chih Wang | Zendy; Hsuan-I Wang | Zendy; Wei-Tsung Tang | Zendy; ChihWei Luo | Zendy; Takayoshi Kobayashi | Zendy; Jihperng Leu | Zendy

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

Author(s) -

Chih Wang,

Hsuan-I Wang,

Wei-Tsung Tang,

ChihWei Luo,

Takayoshi Kobayashi,

Jihperng Leu

Publication year - 2011

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.19.024286

Subject(s) - indium tin oxide , materials science , nanodot , femtosecond , indium , laser , optoelectronics , thin film , conductivity , optics , oxide , nanotechnology , physics , chemistry , metallurgy

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.

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