The use of ultrathin 2D semiconductor materials promises to shrink transistors down to the nanometer scale. However, to achieve a substantial increase in the number of these transistors that can fit on a chip, it is necessary to reduce the metal contacts that connect them to external circuitry. Until now, it has been unclear how
The use of ultrathin 2D semiconductor materials promises to shrink transistors down to the nanometer scale. However, to achieve a substantial increase in the number of these transistors that can fit on a chip, it is necessary to reduce the metal contacts that connect them to external circuitry. Until now, it has been unclear how small these contacts can be made before device performance is compromised. writing in NatureYang et al.1 report a direct measurement of the minimum contact size needed to efficiently generate current in an atomically thin (2D) semiconductor. Their result, 2 to 3 nanometers, is a promising sign that the contacts of 2D transistors can be reduced along with the devices themselves.
Competing interests
The author declares no competing interests.
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