UT seeks alternatives for graphene as a material for chips




The Foundation for Fundamental Research on Matter has just 1.6 million to a research program of the University of Twente. With this program, the university takes two dimensional materials under scrutiny for possible faster chips.

Two-dimensional materials such as the well-known and very thin graphene can lead to faster chips. These include, for example, electrons can therein move faster than in silicon, higher clock frequencies, which makes it possible in processors. The problem is only that it is not easy to produce them on a large scale, because the thickness and the distribution of the graphene is unpredictable.

The search for other materials, according to the University of Twente therefore important, if only because graphene does not have a so-called band gap. “This is a gap between the energy levels that can bridge an electron only with an electric field that is applied from the outside. This field-effect is crucial to the transistor operation. If, however, additional layers are needed from other materials in order to achieve the effect, it is grafeentransistor no longer a two-dimensional, ” says the university.

The chicken wire structure of a single layer of carbon atoms of graphene is used include grafeentransistors, ultracapacitors and transparent electrodes. The scientists, led by Professor Harold Zandvliet want with the research program, Two-dimensional semiconductor crystals called contrast to materials siliceen and look fosforeen. That have a band gap or in addition would be to create a band gap will be lost without leaving the two-dimensional structure.

The University of Twente is working together with theoretical and experimental groups of the Radboud University Nijmegen, Delft University of Technology and the University of Groningen. Ultimately, the research should not only lead to a better understanding and theorizing, but according to the University of Twente also to working devices.


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