8.6. Technology Innovations to Overcome Scaling Limits

Try these first

1. 1.

   What are high-k dielectrics?

   Hint

   Consider materials with a high dielectric constant.

2. 2.

   What is one benefit of strained silicon?

   Hint

   Think about how stress affects movement.

3. 3.

   What is a primary function of high-k dielectrics in MOSFET technology?

   • Increase leakage
   • Reduce leakage
   • Enhance capacitance

   Hint

   Think about what high-k materials aim to improve.

4. 4.

   True or False: Metal gate technology increases threshold voltage variability.

   • True
   • False

   Hint

   Focus on the effects of using metals instead of polysilicon.

5. 5.

   Consider a scenario where two MOSFETs are fabricated—one with standard SiO₂ and the other with high-k dielectrics. Predict the performance differences in terms of leakage and efficiency.

   Hint

   Reflect on the purpose of high-k materials in relation to their dielectric properties.

6. 6.

   Analyze why silicon-on-insulator technology might be preferred in cutting-edge mobile computing devices as opposed to traditional MOSFET structures. Discuss the implications for device performance.

   Hint

   Consider how capacitance influences speed and power in circuits.