Microelectronics: Systems and Devices


At the end of this curricular unit the student will have acquired the knowledge, skills and competences that allow him:
- Understand the basic concepts about the operation of some discrete systems and devices used in microelectronics such as MEMS, diodes, different types of transistors and thyristors
- Be able to distinguish the architecture of the previously mentioned elements
- Know the specific processing techniques and characteristic curves of the elements above

General characterization





Responsible teacher

Pedro Miguel Cândido Barquinha


Weekly - 5

Total - 90

Teaching language



Although not mandatory, it is strongly recommended that the students were already approved in Semiconductor Materials and in Microelectronics I before attending the classes of this curricular unit.


•Physics of Semiconductor Devices, S. M. Sze, K. K. Ng, Wiley, 2012
•Foundations of MEMS, 2nd edition Chang Liu, Pearson/Prentice Hall, 2010
•Introductory MEMS, Fabrication and Applications, Thomas M. Adams, Richard A. Layton, Springer 2010

Teaching method

The UC is divided into theoretical classes and practical (including laboratory) classes.
The evaluation is continuous and consists of the accomplishment of two tests (or alternatively, a final exam about the same topics). Two reports/questionnaires on the practical classes (one on the manufacture of MEMS and the other on the characterization of transistors) are also evaluated. The weight of the tests / exams and reports in the final score is the same (50% / 50%).

Evaluation method

2 tests (lectures and exercises, individual (50 % final mark)
  • 1st test - 26th November, 11am (in lecture slot)
  • 2nd test - 12th January, 11am
Group work on laboratories (50 % final mark)
  • Fabrication/characterization of MEMS (30%)
  • Characterization of transistors (20%)


  • approval in the practical component (average>= 9.5V)

Final score

  • 50% theoretical component (or exam score) + 50%  practical component

Subject matter


- pn and Schottky junctions: formation, device physics, IV and CV characteristics, comparison, applications

- Special pn junctions (Zener diode, Varactor, Esaki diode) and thyristors

- Bipolar transistors: formation, operation regimes and IV characteristics, BJT amplifiers

- JFET and MESFET: formation, operation regimes and IV characteristics, comparison to BJT

- MOSFET: MOS capacitor fundamentals, structure and types, device physics, IV characteristics, comparison with other FETs

- Miniaturization of transistors: advantages, implications on materials and device physics

- TFTs and EGTs: fabrication, comparison with MOSFETs, applications

- MEMS: introduction and applications, materials and technology, miniaturization


Lab/Problem solving:

- Characterization and data analysis of diodes, BJTs, JFETs and MOSFETs.

- Fabrication and characterization of EGTs

- Fabrication and characterization of MEMS

- Problem solving about transistors and MEMS


Programs where the course is taught: