title: Superior local conductivity in self-organized nanodots on indium-tin-oxide films induced by femtosecond laser pulses.
abstract: 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.
authors: Department of Materials Science and Engineering, National Chiao Tung University, Hsinchu, Taiwan.
authors: Chih
authors: C
authors: Wang
authors: Hsuan-I
authors: HI
authors: Wang
authors: Wei-Tsung
authors: WT
authors: Tang
authors: Chih-Wei
authors: CW
authors: Luo
authors: Takayoshi
authors: T
authors: Kobayashi
authors: Jihperng
authors: J
authors: Leu
mesh_terms: D004553:Electric Conductivity; D007834:Lasers; D008567:Membranes, Artificial; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects*; D010316:Particle Size; D017971:Tin Compounds / Q000737:chemistry* / Q000528:radiation effects*
chemical_list: D008567:Membranes, Artificial; D017971:Tin Compounds; C109984:indium tin oxide