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Physics and Engineering of CMOS Devices
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Wed 3-4Session S636

Outline of lecture

This class provides the fundamentals of advanced nanoscale MOS transistors. Firstly, the operation of MOS transistors on bulk Si substrate will be explained. The impact of shrinking device dimensions on device performance will be discussed. Then, the concept of equivalent scaling, which is important in modern MOS transistors, will be introduced. As an example of the equivalent scaling, mobility booster technologies and high-k and metal gate stack will be shown.

Purpose of lecture

The objectives of this class are 1) to understand the operation principle of MOS Transistors and 2) to know how to desing MOSFETs to achieve higher performance. Advanced technologies such as stress engineering, high-k gate dielectrics, metal gate electrode, and new channel materials will be introduced. For each technology, not only advantages but also technical issues which should be overcome will be addressed. By taking this class, students are expected to get familiar with technologies of modern, advanced CMOS devices and physics behind nanoscaled transistors.

Plan of lecture

1. MOS Transistors (Operation Principle, Scaling of Device Dimension)
2. Three-dimensional Transistors (SOI FETs, FinFETs, Double-Gate FETs)
3. Carrier Transport in MOS Transistors with Emphasis on Mobility
4. Mobility Booster Technologies (Stressed FETs)
5. High-k and Metal Gate Electrode
6. Fabrication Processes of Advanced CMOS Devices
7. Ballistic MOSFETs

Textbook and reference

Reference:
Y. Taur and T.H. Ning, ''Fundamentals of Modern VLSI Devices,'' Cambridge, 1998.
C. Hamaguchi, ''Basic Semiconductor Physics,'' Springer, 2001.

Related and/or prerequisite courses

Basics of Semiconductor Physics
Fundamentals of Electrodynamics

Evaluation

Exercises during the class (40%)
Term-end Exam. (60%)

Comment from lecturer

Exercises will be held as needed.

Supplement

Office hours:
Anytime, with permission by e-mail at
uchidak (at) neo.pe.titech.ac.jp for Assoc. Prof. Ken Uchida