For decades, the steady shrinking of electronic components has powered faster, more efficient technology. Engineers now hope to push that trend even further with 2D materials, atomically thin sheets that promise unprecedented control at the smallest scales.
But a new study from TU Wien shows that many of these once promising materials may not work as expected. The issue is not just the material itself. It is also how it interacts with other components. When a 2D material is paired with an insulating layer, a tiny gap forms between them, significantly reducing performance. Identifying which materials avoid this problem could help the semiconductor industry steer clear of costly dead ends.
“For many years, researchers have quite rightly been fascinated by the remarkable electronic properties of novel 2D materials such as graphene or molybdenum disulfide,” says Prof. Mahdi Pourfath, who carried out the research together with Prof. Tibor Grasser at TU Wien’s Institute for Microelectronics. “What is often overlooked, however, is that a 2D material alone does not make an electronic device. We also need an insulating layer—usually an oxide. And this is where things become more complicated from a materials science perspective.”
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