Abstract
A simple method for fabricating polyvinylpyrrolidone (PVP) thin films containing barium titanate (BT) nanoparticles on electrodes is proposed. The BT particles that had an average size of ca. 8 nm and a tetragonal crystalline phase were prepared with complex alkoxide methods in the presence of PVP. PVP/ethanol/water solutions containing the BT particles, which were suspended with sonication for 0-12 h, and were spin-coated on ITO glass substrates. Surface roughness was low at a sonication time longer than 4 h. As a BT concentration for the film increased from 0 to 85 wt%, its dielectric constant increased from 7 to 30 with dissipation factors below 0.12. The present method can be used to prepare high capacitance films at low temperatures, which have favorable electrical properties or characteristics.
Original language | English |
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Pages (from-to) | 2723-2729 |
Number of pages | 7 |
Journal | Applied Surface Science |
Volume | 255 |
Issue number | 5 PART 2 |
DOIs | |
Publication status | Published - 2008 Dec 30 |
Keywords
- Barium titanate
- Dielectric property
- Nano-composite
- Nanoparticle
- Polyvinylpyrrolidone
- Thin film
ASJC Scopus subject areas
- Chemistry(all)
- Condensed Matter Physics
- Physics and Astronomy(all)
- Surfaces and Interfaces
- Surfaces, Coatings and Films