Silicon's long reign as the king of semiconductors may soon come to an end, courtesy of groundbreaking work at Georgia Tech, where researchers have developed the first operational semiconductor comprised of nothing but a single layer of graphene—carbon atoms bonded mightily together. In what's being hailed as a leap forward for electronics, the innovation could give way to devices that leave current tech in the dust.
"It's like driving on a gravel road versus driving on a freeway," professor Walter de Heer of Georgia Tech said in an interview obtained by FOX 5 Atlanta. He's been at the forefront of exploring graphene's place in electronics for over 20 years, driven by a conviction that the material is destined to reshape our technological landscape. Graphene could well support larger currents and operate without succumbing to the heat that plagues silicon-based electronics.
De Heer's team, collaborating with peers from Tianjin University in China, has tackled graphene's biggest barrier—the "band gap" issue— crucial for a semiconductor's ability to effectively switch on and off. Described in a Nature paper, the researchers have reportedly conquered the conundrum by doping graphene with electrons, courtesy of strategically placed atoms. This technique could allow for silkier computing speed while maintaining the integrity of the material.
The new graphene semiconductor boasts an electron mobility rate that is 10 times greater than silicon, heralding possibilities for faster computing speeds and efficiency. "Our motivation for doing graphene electronics has been there for a long time, and the rest was just making it happen," de Heer stated in a report by the university. As detailed in a Network World article, the technology is embryonic but pulses with potential, including quantum computing applications, where graphene's quantum mechanical wave properties are prized.
Invoking the Wright brothers' historical foray into aviation, de Heer has likened his team's discovery to those first courageous meters of flight—an apt comparison for a development that could, in time, transport us into a new age of computing, where limitations of the silicon chip become tales of a bygone era.
