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Fabrication of Nanodot Arrays Via Pulsed Laser Deposition Technique Using (PS-b-PMMA) Diblock Copolymer and Anodic Aluminum Oxide Templates  

Park Sung-Chan (Department of Chemical and Biological Engineering, Korea University)
Bae Chang-Hyun (Department of Chemistry, Kyung Hee University)
Park Seung-Min (Department of Chemistry, Kyung Hee University)
Ha Joeng-Sook (Department of Chemical and Biological Engineering, Korea University)
Publication Information
Journal of the Korean Vacuum Society / v.15, no.4, 2006 , pp. 427-433 More about this Journal
Abstract
We have fabricated nanodot arrays by using phase separated (PS- b- PMMA) diblock copolymer film and anodic aluminum oxide (AAO) membrane as templates with hexagonal arrays of cylindrical microdomains perpendicular to the substrate. Pulsed laser deposition technique was used to deposit various kinds of materials including Ag, Ni, ZnO, Si:Er, and Co/Pt onto Si substrates. The size and separation of nanodots correspond to those of the templates used, The density of nanodots was estimated to be $6{\times}10^{11}/cm^2$ and $1{\times}10^{10}/cm^2$ when the diblock copolymer and AAO were used, respectively. In particular, the optical properties of ZnO and Si: Er nanodot arrays were investigated and the strong photoluminescence at 380 nm and $1.54{\mu}m$ was observed from ZnO and Si:Er nanodot arrays, respectively.
Keywords
Diblock copolymer; Anodic aluminum oxide; Nanodot arrays; Pulsed laser deposition;
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