Download MSc., BSc., Fag project description

MSc./BSc./Fag project description
Design and building of a Hall measurement system
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Free carriers concentration and mobility are basic and key characteristics of semiconductors. Simple resistivity
measurements only give the product of these two values. Hall measurement is a solution to this problem. It is
one of the main tools for characterization of semiconductors, which is based on applying a magnetic field and an
electric field on the semiconductor at the same time and deriving the electronic transport properties of the sample
including carrier concentration, carrier type and mobility. An additional option to this system can be performing
measurements at cryogenic temperatures which provides clues to the dominating scattering mechanism in the
sample.
In this project you will design and build the mechanical and electrical parts of the system as well as the software
for recording and manipulation of the data. After designing the setup (preferably in a CAD software) and
building it in the workshop you will write a program in LabVIEW to derive the desired information from the
measured data.
During the independent design and build of a real measurement system you will develop your creative design,
fabrication and programing skills as well as a deep applied theory about semiconductors which will be very
valuable for your future industrial or academic career.
MSc. or BSc. students in photonics engineering, mechatronics, electrical engineering, nanotechnology and
physics may be interested in this project. Basic knowledge about semiconductors and LabVIEW is appreciated
but not necessary. The level of the project can be adjusted according to the student’s level of study.
Contact:
Kresten Yvind, Associate professor: [email protected]
Elizaveta Semenova, Senior researcher: [email protected]
Mohammad Esmail Aryaee Panah, PhD. student: [email protected]