| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Advances in Emerging Electronic Nanomaterials: Synthesis, Enhanced Properties, Integration, and Applications
|
| Presentation Title |
How to Achieve State-of-the-art Heterostructures from Polymer-contaminated Graphene? |
| Author(s) |
Zhujun Huang, Suji Park, Kevin G Yager, Davood Shahrjerdi |
| On-Site Speaker (Planned) |
Davood Shahrjerdi |
| Abstract Scope |
Various materials techniques (e.g., chemical vapor deposition) can now produce macroscopic scale graphene. Despite these advances, constructing similarly sized van der Waals (vdW) heterostructures with atomically clean interfaces is still unrealized. A primary reason is the contamination of graphene with polymers during preparation and film handling. The general belief is that clean heterostructures cannot be made using polymer-contaminated graphene.
Contrary to this belief, we show the complete removal of polymer residues from vdW interfaces across the entire dimension of graphene heterostructures. We do so by introducing a simplified picture of interface cleaning that hypothesizes the physical processes occurring at the vdW interfaces. We validate those hypotheses through extensive experiments performed using Quantum Materials Press (QPress) tool, a unique and high precision layered assembly setup developed at Brookhaven National Laboratory. Our study paves the way for fabricating clean heterostructures with a state-of-the-art electronic performance from polymer-contaminated graphene. |