| Autor: |
Mikhailova MA; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru., Tekle TH; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru., Bachinin SV; Faculty of Physics and Engineering, ITMO University, St. Petersburg, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation., Smirnov AA; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru., Pogosian TN; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru., Milichko VA; Faculty of Physics and Engineering, ITMO University, St. Petersburg, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation., Vinogradov AV; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru., Morozov MI; Laboratory of Solution Chemistry of Advanced Materials and Technologies, ITMO University, Lomonosova str. 9, St.Petersburg, 191002, Russian Federation. morozov@scamt-itmo.ru. |
| Abstrakt: |
Nanocrystalline titanium dioxide (TiO 2 ) is a widespread multifunctional and environmentally friendly material that has numerous applications requiring micro-/nanofabrication or thin film deposition. In most cases, the fabrication of titania films can be achieved using cost-efficient solution chemistry combined with various coating or printing techniques. The practical implementation of these methods requires the preparation of a suitable ink with properly adjusted rheological properties. Conventionally, such adjustments are achieved based on TiO 2 hydrosols containing various organic surfactants and stabilizing agents. However, the use of such additives may affect the properties of the deposited functional layer, which can be crucial for electronic and optical applications. In this work, we address a comprehensive study of simple surfactant-free TiO 2 dispersion systems based on various water-alcohol solvents and demonstrate the possibility of controlling the rheological properties of the titania ink in a wide range that is suitable for several printing applications. As a particular example, we demonstrate the application of a water-i-propanol-TiO 2 dispersion as a functional ink for the offset printing of interference images. |
