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Solution-Route Inkjet Fabrication of CeO2 Thin Films with Tunable Microstructure
1Department of Material Science and Engineering, KTH-Royal Institute of Technology, SE-100 44 Stockholm, Sweden.
Materials (Basel, Switzerland)
|February 25, 2023
Summary
Inkjet printing enables the fabrication of tunable porosity cerium oxide (CeO2) thin films. This method offers precise control over microstructure and minimal material waste for diverse applications.
Area of Science:
- Materials Science
- Nanotechnology
- Chemical Engineering
Background:
- Solution-processed thin films offer versatile fabrication routes.
- Controlling microstructure in cerium oxide (CeO2) films is crucial for various applications.
- Inkjet printing presents a precise deposition technique for advanced materials.
Purpose of the Study:
- To report the fabrication and characterization of solution-route CeO2 thin films using inkjet printing.
- To investigate the influence of ink concentration and printing temperature on film properties.
- To demonstrate the tunability of porosity and microstructure in CeO2 films.
Main Methods:
- Inkjet printing of cerium nitrate precursor inks (0.2 M, 0.4 M, 0.6 M).
- Deposition at varying temperatures (60 °C and 300 °C) to control film structure.
- Characterization using X-ray diffraction (XRD) to confirm crystal structure.
Main Results:
- Successfully fabricated CeO2 thin films with tunable porosity and microstructure.
- Film thickness varied with printing temperature (≈140 nm at 60 °C, ≈185 nm at 300 °C).
- Cubic fluorite structure confirmed via XRD for all printed films.
Conclusions:
- Inkjet printing is an effective method for high-quality CeO2 thin film fabrication.
- The technique allows for controlled microstructure and minimal material waste.
- Tunable dense and porous films can be produced for diverse applications.
