Journal
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
Volume 81, Issue -, Pages 1-6Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2018.02.028
Keywords
SAW; AlN; Sapphire; Passivation; Harsh environmental
Categories
Funding
- COMET-Competence Center for Excellent Technologies Programme by BMVIT
- BMWFJ
- Federal Province of Carinthia
- Federal Province of Styria
Ask authors/readers for more resources
This paper investigates the potential of passivation coatings for surface acoustic wave devices ( SAW) based on aluminum nitride as a piezoelectric layer to operate at temperatures up to 1000 degrees C and in pure oxygen atmosphere. To increase the durability of SAW devices, a thin passivation layer was deposited on top of the structure, consisting of either aluminum nitride, alumina or silicon nitride. To investigate the effectivity of the passivation layer as oxygen diffusion barrier, time resolved X-ray diffraction (XRD) measurements were performed at 1000 degrees C in pure oxygen atmosphere for up to 24 h. Furthermore, the influence of an additional layer on top of the structure on the SAW performance were examined. Therefore, samples were measured before and after the deposition process. Afterwards, the samples were placed in a furnace in pure oxygen atmosphere to test the robustness of the different layers.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available