| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
100 Years and Still Cracking: A Griffith Fracture Symposium
|
| Presentation Title |
Improving Metal-polymer Adhesion through Alloy Development |
| Author(s) |
Megan J. Cordill, Patrice Krieml |
| On-Site Speaker (Planned) |
Megan J. Cordill |
| Abstract Scope |
Thin film transistor display technologies limit the lifetime of flexible displays due to the brittle fracture behavior of the currently used Mo/Al/Mo electrodes. In order to improve the electro-mechanical behavior of these electrode stacks the Mo adhesion layer was alloyed with suitable metals to increase its ductility, while maintaining good electrical conductivity and interface strength. Magnetron sputtered Mo thin films, alloyed with Al, Nb or Ta, on flexible Polyimide substrates were tested with monotonic in situ uniaxial tensile tests to evaluate their respective fracture resistance, electrical behavior, and adhesion energies to the polymer substrate. Mo-Ta has the best combination of low electrical resistivity with high crack onset strains and improved interface strength, thus shows the best prospects to substitute the Mo adhesion layers in flexible displays. |
| Proceedings Inclusion? |
Planned: |