Atomic Orbital Overlap Engineering For 3D-2D Contacts & Record High-Performance 2D Transistors.

2023-02-21 Prof. Mayank Shrivastava, Associate Professor, Dept. of ECE, IISc.

ABSTRACT :

Metal (3D) to graphene/TMD (2D) contact/interface has been considered one of the most fundamental challenges to harnessing the full potential of 2-dimensional materials such as graphene or 2D semiconductors. This talk will cover how the fundamental understanding of the contact’s quantum chemistry resulted in unique ways to engineer it. We have found that it can be addressed by engineering the atomic orbital’s overlap between the 3D and 2D systems. Different techniques to engineer and strengthen the atomic orbital overlap used to engineer metal-graphene/metal - TMD contacts will be presented, resulting in record-low contact resistances and record-high transistor performance (demonstrated experimentally) for graphene and several TMD channels. In the end, I will briefly touch base on other 2D material science and technology threads, that my group works on.

Event Name

Seminars

Place

S N Bose Hall (HSB 210)

Start Time

15:30

End Time

16:30

External Link

PDF to Talk