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Chapter 12: Problem 19

What material is traditionally used to make the gate in a MOSFET transistor? What material is used in the next generation transistors?

Short Answer

Expert verified
The gate in a traditional MOSFET transistor is made up of a metallic material, usually Polysilicon (poly-Si). In the next generation of transistors, the material often used for the gate is Metal, which offers reduced gate leakage, improved performance, and better scaling of device dimensions. Metal gates with high-k dielectric materials are common in advanced CMOS technologies, such as Intel's High-k and Metal Gate (HKMG) process.

Step by step solution

01

Material Used for the Gate in Traditional MOSFET Transistors

The gate in a traditional MOSFET transistor (Metal-Oxide-Semiconductor Field-Effect Transistor) is made up of a metallic material, usually Polysilicon (poly-Si). Polysilicon is a type of silicon that is highly conductive and popular due to its compatibility with the silicon-based semiconductor fabrication process.
02

Material Used in Next Generation Transistors

In the next generation of transistors, the material often used for the gate is Metal. Research has shown that using metal gates instead of polysilicon offers several benefits such as reduced gate leakage, improved performance, and better scaling of device dimensions. Metal gates with high-k dielectric materials are common in advanced CMOS (complementary metal鈥搊xide鈥搒emiconductor) technologies, such as Intel's High-k and Metal Gate (HKMG) process.

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