Materiais para Electrónica e Optoelectrónica

Objectives

The student should learn the electronic and optoelectronic applications of semiconductor and insulating materials, should gain a deeper insight into the relationship between the structure of materials and its electric, optical and magnetic behaviour, should be acquainted with typical values of the relevant properties, to do project and qualitative previsions, should understand the inner working of devices such as junction diodes, photovoltaic cells, transistors, lasers and optical fibers.

Syllabus

Resistors, capacitors, inductors, Thévenin's theorem, Kirchhoff's Laws, impedance. Polarization, electric susceptibility, absolute permittivity, Clausius-Mosotti equation, Gauss's theorem, electrical breakdown, piezoelectric, ferroelectric and pyroelectric materials. Intrinsic and extrinsic semiconductors, recombination, optical absortion, electron and hole diffusion, continuity equation, piezoresistivity, Schottky junction, Schottky solar cell, ohmic contacts, Peltier effect, Seebeck effect. Semiconductor devices, pn junction, diodes, LEDs, solar cells, transistors BJT, JFET and MOSFET. Soft and hard magnetic materials, energy band diagrams and magnetism, magnetoresistance, magnetic recording materials, superconductivity. Optical properties. Thin film interference. Types of optical fibers. Dispersion and attenuation in optical fibers. Ellipsometry. Absorption and luminescence of lanthanide-doped solids.

Prerequisites

Electromagnetism, Solid state physics.

Cross Competence Component

- Critical and innovative thinking (creativity, strategic thinking, problem solving, decision making) - Interpersonal skills (oral presentations, teamwork, organizational and communication skills) - Intrapersonal Skills (self-discipline, enthusiasm, perseverance, self motivation, use of computer tools, multimedia and presentation)

Laboratorial Component

2 laboratory works per group, with presentation and discussion.

Ethical Principles

All members of a group are responsible for the group´s work. In any assessment, every student shall honestly disclose any help received and sources used. In an oral assessment, every student shall be able to present and answer questions about the entire assignment and solution.