(002)-Oriented AlN Thin Films Sputtered on Ti Bottom Electrode for Flexible Electronics: Structural and Morphological Characterization
Aluminum nitride (AlN) thin films were deposited by sputtering on Ti bottom electrodes and integrated on a kapton substrate for flexible and stretchable electronics. The aim of this work was to find the best combination of Ti underlayer sputtering conditions and AlN over-growth to obtain the (002) nitride orientation, fundamental requirement for the piezoelectric response of the material in piezoelectric devices. Flexible electronics represent today’s cutting-edge electronic technologies thanks to their low cost and easy fabrication scalability.
KeywordsAluminum nitride Magnetron sputtering Piezoelectricity Flexible electronics
The authors are very grateful to M.C. Martucci, E. Melissano, A. Pinna and M. Masieri for their valid technician support in depositions and XRD and SEM characterizations.