There's a Big Problem With Silicon. What's Next? | Summary and Q&A

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June 6, 2019
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There's a Big Problem With Silicon. What's Next?

TL;DR

Transistors made of silicon are reaching their limit, and experts are looking to 2D materials like molybdenum disulphide (MOS2) for faster, cheaper, and more efficient electronics.

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Questions & Answers

Q: What is a transistor and how has its size evolved over time?

A transistor is an electrical switch that has become smaller and smaller over time, from vacuum tubes to silicon transistors, enabling smaller and more powerful electronic devices.

Q: What are some problems with silicon transistors and why are experts considering MOS2?

Silicon transistors face issues like short channel effects, surface scattering, and quantum mechanics, prompting experts to explore 2D materials like MOS2 that offer better control, efficiency, and performance.

Q: How does MOS2's thickness impact its performance as a transistor?

The extremely thin nature of MOS2 allows for better control of the channel, reduces surface roughness and imperfections, and minimizes the occurrence of short channel effects.

Q: What are the challenges in manufacturing and implementing MOS2 transistors?

Challenges include finding cost-effective methods for growing and manipulating MOS2, addressing short channel effects, improving cooling for densely packed circuits, and resolving power consumption issues in copper connections.

Summary & Key Takeaways

  • Transistors are electrical switches that power digital logic in computers, and their shrinking size has led to smaller and more powerful devices.

  • MOS2, a 2D material consisting of a sheet of molybdenum atoms sandwiched between sulfur layers, is a promising alternative to silicon transistors.

  • The challenge lies in solving manufacturing challenges, improving short channel effects, handling surface scattering, and overcoming limitations in cooling and copper connections.

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