# 1009-02 Electronic Physics

### Structure

Course title : Electronic Physics

Course number : 1009-02

Period : 2d quadrimestre

UEC (unités de cours) : 4 (4*7 = 28 hs)

UEX (unités d’exercices) : 1 (1* 7 = 7 hs)

UTR (unités de travaux pratiques dédoublées) : 6/7 * 24.5 = 21 hs * 2 = 42 hs

ECTS : 4

Poids :80

### Description

This course approaches the study of the semiconductor components based on the fundamental equations of Quantum Physics and electricity. The principal semiconductor devices are analyzed in detail: junction PN, transistor MOS and bipolar transistor. The current-voltage equations are established. The models DC, small signals and high frequency are derived. Finally, the elementary schemes composed by one or two non-linear components are analyzed.

At the end of the course the student will be able to identify the principal parameters of the semiconductor devices and to understand their influence and relations. In terms of skills, the student will be able to carry out basic non-linear circuits, based on diodes, bipolar and MOS transistors, to calculate the DC operating conditions and the small signal parameters. The training sessions will be also accompanied by modeling of the electric diagrams and simulations by using the Spice circuits modeling language. To develop individual qualities of analysis, exercises will be proposed to put into practice simplification techniques based on DC/AC problem decomposition. Acquired knowledge is a pre-requirement essential to follow the analog circuits’ course.

### Specifics competences

To understand the operation mechanisms of basic semiconductor devices and applications: diode, MOS capacities, bipolar and MOS transistors.

Intuitive and mathematical approach starting from the fundamental equations of electricity and quantum mechanics.

Course of introduction to electronics and micro-electronics: the applications are approached to follow the analog and digital electronics specialized courses.

### Content

- Introduction.
- Basic physics. Semiconductor’s energy bands. Distinction metal, semiconductor, insulator. Fermi level. Electric conductivity and transport equations. Generation and recombination.
- Junction PN. Balanced PN junction. Polarized PN junction. Current calculation. Capacities. Small models and large signals.
- MOS Transistor. MOS Capacity. Current calculation. Short channel effects. Large models and small signals.
- The bipolar transistor. Ebers and Moll Model. Model of transport.
- Basic of transistor MOS and Bipolar assemblies. Common mode Emetteur(Bipolar) /Source(MOS). Common mode Base(Bipolar)/Grille(MOS). Common mode Collecteur(Bipolar)/drain(MOS).
- Basic topologies with two transistors. Differential pair. Current mirror. Cascode topologie

### References

Courses and transparencies based in particular on the book: **Physics of the Semiconductor Devices, J-P. Colinge, F. Van de Wiele, Editions De Boeck.**

Other references: http://www.wkap.nl/prod/b/1-4020-7018-7.

Web sites and references transmitted during the year.

### Supports

Material available on the Moodle intranet platform : such as WEB links, slides, articles.

Additional material: electronics and programming documentation and boards for lab an project sessions.

### Basis

Physique quantique, notions de cristallographie.

Physique de l’état solide [0902-02].

Electricité générale [1008-01].

### Course

**Theory **:

The course poses the in a rigorous way theoretical bases and the tools which will be necessary to understand and solve the exercises.

**Exercises **:

They are fundamental to reinforce theoretical knowledge, the comprehension by the practice, to learn the analysis and the solution of problems related to circuits containing semiconductor devices (diode, bipolar and MOS).

**Laboratory **:

They are duplicated (groups of 20 students max.). The laboratory sessions are illustrated by simple design examples. They are vital to allow a comprehension by the practice of the concepts necessary to handling of discrete components (in particular for the diode and the transistors), modeling by using CAD tools commonly used in Micro-electronics (Cadence and Spice simulation of circuits), their interfaces, the interaction with the environment. During those sessions, the student writes a report of the taken measures and analyzes the results obtained. A student is systematically sent to the blackboard: he serves as privileged interlocutor, to establish the dialogue with the students allowing to progress at a speed adapted to the audience.