Article ID Journal Published Year Pages File Type
1476627 Journal of the European Ceramic Society 2010 6 Pages PDF
Abstract

The sol–gel method was used to synthesize Bi12SiO20 thin films. Two synthesis routes with two different solvents, i.e., 2-ethoxyethanol and acetic acid, were used and compared. Thin films were deposited onto Pt/TiO2/SiO2/Si substrates by spin-coating at 3000 rpm and annealed at 700 °C for 1 h. A different coordination of the bismuth ion was observed in the sols prepared with acetic acid (AcOH), and as a result, stable sols were formed with a shorter gelation time tG = 84 h (c = 0.76 M), when compared with the sols prepared from 2-ethoxyethanol (EtoEtOH) tG = 580 h (c = 0.76 M). The microstructures of the Bi12SiO20 thin films prepared from sols using EtoEtOH were homogeneous and dense. On the other hand, a porous microstructure was observed for the Bi12SiO20 thin films deposited from the sol in which AcOH was used as the solvent.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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