Patterned transparent zinc oxide films produced by sol-gel embossing
| Autor: | Richard J. Winfield, L. H. K. Koh, J. Rao, Shane O'Brien, Gabriel M. Crean |
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| Rok vydání: | 2008 |
| Předmět: |
Morphology (linguistics)
Materials science Polydimethylsiloxane Band gap Metallurgy chemistry.chemical_element Surfaces and Interfaces Substrate (electronics) Zinc Condensed Matter Physics Microstructure Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering Materials Chemistry Electrical and Electronic Engineering Embossing Sol-gel |
| Zdroj: | physica status solidi (a). 205:1938-1942 |
| ISSN: | 1862-6319 1862-6300 |
| Popis: | A low cost zinc oxide embossing technique is reported as a method of fabricating structures relevant to a variety of applications. A zinc based sol–gel material was prepared from zinc acetate [Zn(C2H3O2)2], monoethanolamine [H2NC2H4OH] and isopropanol. The sol–gel was cast into a polydimethylsiloxane (PDMS) mould a track design, placed in contact with the substrate and dried under vacuum at 70 °C for 3 hours. The formed track pattern was further densified to provide a stable conductor film that retained the embossed shape. An optimum Zn sol–gel content of 0.6 M was identified. The embossed films had a transparency of greater than 83% in the visible region. The optical bandgap energy was evaluated to be 3.306 eV. The influence of ZnO sol–gel film synthesis and embossing parameters on the microstructure, morphology and optical transparency of fabricated structures is described. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim) |
| Databáze: | OpenAIRE |
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