SENSORS: PHYSICS AND TECHNOLOGY
Academic year and teacher
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- Versione italiana
- Academic year
- 2022/2023
- Teacher
- CESARE MALAGU'
- Credits
- 6
- Didactic period
- Secondo Semestre
- SSD
- FIS/03
Training objectives
- At the end of the class the student should be capable of solving a problem in the field of semicodnuctors and knowing the state of the art of chemoresistive solid state gas sensors.
Prerequisites
- Bachelor in physics, bases of quantum mechanics and solid state physics
Course programme
- The scientific method applied to state of the art of sensors research, electromagnetism and quantum mechanics deepening,(first 3 weeks, about 12 hours). Solid state approach to the characterization of semiconductor for sensors. Introduction to physical chemistry, free energy and electrochemical potential. (3 weeks, about 15 hours) Chemoresistive sensors. Nanostrctured semiconductors. Tunneling in nanostructured semiconductors. p-n junction. Schottky barrier. Spherical junction. (3 weeks, about 15 hours) Pinning of Fermi level. Impedance spectroscopy. Electrical characterisztions of sensors. Thick film technology. (last 3 weeks, about 15 hours).
Didactic methods
- frontal lessons and exercises at the end of each topic. A series of laboratory experiences is devoted to the characterizations of the sensors and materials.
Learning assessment procedures
- The examination is an oral interview in English to evaluate the acquired knowledge and skills. Three open questions will be asked, one of which on a topic chosen by the student.
Reference texts
- Chemical sensing with solid state devices
Morrison Madou
Physics of semiconductor devices
M.Shur
Metal-semiconductor contacts
Rohderick and Williams
Ashcroft/Mermin Solid state Physics
integrative slides of the lectures
