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The team overcame a longstanding obstacle that has caused grief for graphene researchers for decades. Semiconductors require a band gap, across which electrons might or might not be able to jump. Graphene’s lack of a band gap meant that many scientists expected graphene electronics to be doomed – until now.

“We now have an extremely robust graphene semiconductor with 10 times the mobility of silicon, and which also has unique properties not available in silicon,” said de Heer. “But the story of our work for the past 10 years has been: can we get this material to be good enough to work?”

https://eandt.theiet.org/2024/01/04/researchers-create-first-functional-graphene-semiconductor