Graphene IC interconnects deposited in CMOS conditions Leave a comment

Vacation spot 2D CTO Kaustav Banerjee says the corporate’s doped graphene sheets have present densities 100 occasions as dense as copper.

It’s the solely firm to reveal graphene deposition straight on prime of transistors slightly than rising the interconnects individually after which attaching them to the chip.

The corporate makes use of a pressure-assisted direct deposition method which makes use of a sacrificial metallic movie comparable to nickel. Carbon is pressured via the movie and  recombines into clear multilayer graphene beneath.

After the graphene interconnects are patterned, the graphene layers are doped to cut back the resistivity and increase their current-carrying capability. 

The Vacation spot 2D staff makes use of a doping method referred to as intercalation, the place the doping atoms are subtle between graphene sheets.

The doping atoms can fluctuate—examples embody iron chloride, bromine, and lithium. As soon as implanted, the dopants donate electrons to the graphene sheets, permitting increased present densities. 

Vacation spot 2D has demonstrated the method on the chip degree, and builtn instruments for wafer-scale deposition that may be applied in CMOS fabs.