P1.0.14 Inkjet printed In2O3 and In2O3/CNT hybrid microstructures for future gas sensing application
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.0 Metal Oxide-based Sensors
- Author(s)
- M. Pashchanka, J. Schneider - Fachbereich Chemie, Anorganische Chemie, Technische Universität Darmstadt (Germany), A. Gurlo, R. Prasad, N. Nicoloso, R. Riedel - Fachbereich Materialund Geowissenschaften, Fachgebiet Disperse Feststoffe, Technische Universität Darmstadt (Germany)
- Pages
- 791 - 794
- DOI
- 10.5162/IMCS2012/P1.0.14
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
We report on the fabrication of In2O3/multiwalled carbon nanotubes (CNTs) composite microstructures via inkjet printing. The active sensor materials were derived from an inkjet printed suspension of carbon nanotubes and molecular In2O3 metalorganic single source precursor onto Si, SiO2 or alumina substrates followed by thermal conversion and gas sensing measurements. We found a good correlation of printed microstructures (e.g. tracks 100-150 _m wide) with pre-defined programmed patterns and a homogeneous distribution of CNTs in the composites. The ink-jet printed morphology is scalloped and continuous without breaks. Critical printing parameters like printing resolution or ‘coffee stain effect’ can be successfully controlled by changing precursor solution viscosity, substrate temperature and number of layers repeatedly printed on top of each other.