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A Standard and Reliable Method to Fabricate Two-Dimensional Nanoelectronics
Published on: August 28, 2018
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Transistores verticales MoS2 con una longitud de puerta inferior a 1 nm
Fan Wu1,2, He Tian3,4, Yang Shen1,2
1School of Integrated Circuits, Tsinghua University, Beijing, China.
Nature
|March 10, 2022
Resumen
Los investigadores desarrollaron transistores ultraescalados utilizando disulfuro de molibdeno (MoS2) y grafeno, logrando longitudes de puerta inferiores a 1 nanómetro. Este avance hace avanzar la miniaturización de los dispositivos electrónicos, extendiendo potencialmente la Ley de Moore.
Área de la Ciencia:
- Ciencias de los materiales
- Nanotecnología
- Física del estado sólido
Sus antecedentes:
- Los transistores ultraescalados son cruciales para la electrónica de próxima generación.
- La fabricación de transistores con longitudes de puerta inferiores a 1 nanómetro utilizando materiales atómicamente delgados como el disulfuro de molibdeno (MoS2) sigue siendo un desafío significativo.
Objetivo del estudio:
- Para demostrar transistores MoS2 de pared lateral con longitudes de puerta inferiores a 1 nm.
- Para utilizar el borde del grafeno como un electrodo de puerta para transistores ultraescalados.
Principales métodos:
- Fabricación de transistores de MoS2 de pared lateral utilizando grafeno de gran área y películas de MoS2 cultivadas por deposición de vapor químico.
- Integración de estos materiales en una oblea de 2 pulgadas para la producción de dispositivos escalables.
Principales resultados:
- Transistores MoS2 de pared lateral demostrados con un canal atómicamente delgado y una longitud de puerta física inferior a 1 nm.
- Se han conseguido altas relaciones de encendido/apagado (hasta 1,02 × 10^5) y baja oscilación subumbral (hasta 117 mV dec^-1).
- Las simulaciones mostraron longitudes de canal efectivas cercanas a 0,34 nm (estado encendido) y 4,54 nm (estado apagado).
Conclusiones:
- Este enfoque novedoso permite la creación de transistores ultraescalados cruciales para los futuros dispositivos electrónicos.
- La tecnología demostrada puede contribuir significativamente a la escala continua de los transistores, extendiendo potencialmente la Ley de Moore.
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