Advanced transistors (FinFET and GAA)

What is the cause of self-heating, which tends to be a problem in FinFETs and SOI transistors?

  1. AThe transistor gets too cold
  2. BNo current flows at all
  3. CThe channel is thin or surrounded by insulators, so heat generated cannot easily escape to the substrate
Show answer and explanation

Answer: C. The channel is thin or surrounded by insulators, so heat generated cannot easily escape to the substrate

In thin structures such as fins, or structures surrounded by oxide with low thermal conductivity, heat generated in the transistor does not easily escape to the substrate, and the channel temperature rises. Higher temperature lowers mobility and affects wiring reliability, so it must be considered in design.

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More Advanced transistors (FinFET and GAA) questions

  1. In highly scaled transistors, which factors are becoming increasingly important limits on performance?
  2. Which correctly describes materials such as molybdenum disulfide (MoS2), researched as channel materials for future ultra-small transistors?
  3. What is the main purpose of growing raised crystal on the fins in the source and drain of a FinFET by epitaxial growth?
  4. What is the basic way to reduce metal-semiconductor contact resistance?
  5. Which is considered to show the real degree of logic scaling better than the process generation (node) name?