Risto Punkkinen profile picture
Risto
Punkkinen
University Research Fellow, Space Research Laboratory
PhD
Semiconductor technology

Contact

Areas of expertise

Semiconductor technology
electrical characterization of semiconductor materials
electrical characterization electronic components
sensor technology
diode based particle detectors

Biography

Risto Punkkinen (born 1951) received his MSc degree in physics from the University of Turku,Finland in 1976 and received his PhD in physics from the University of Turku, Finland 1990. Since then he has worked at the university almost all the time mainly in teaching. He has retired  in August 2021. After that he has worked as a part-time researcher in Academy of project Foresail and worked as a part-time teacher teaching basic courses in electronics.


Teaching

Teaching has covered the basic and advanced courses in electronics and semiconductor technology and being responsible of them.

Research

My reseach has concentrated on semiconductor technology and measuring technology.
One object was to study the possiblity of manufacturing silicon-based laser.
In sensor technology, we succeeded in manufacturing a sensor on a silicon substrate that is capable of detecting very low hydrogen concentrations in air.
Our laboratory laboratory has produced and measured the main particle diode dectectors used in Academy’s Foresail satellite project to be used in space. Also the setup of the particle detector system PATE was finalized in the clean room.
Material science: trying to improve the properties of a MOSFET by using different materials in order to improve the mobility of electrons and holes.


Publications

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Fabrication of a thin silicon detector with excellent thickness uniformity (2016)

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Valtonen E, Eronen T, Nenonen S, Andersson H, Miikkulainen K, Eranen S, Ronkainen H, Makinen J, Husu H, Lassila A, Punkkinen R, Hirvonen M
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Toward the Atomically Abrupt Interfaces of SiOx/Semiconductor Junctions (2016)

Advanced Materials Interfaces
Kuzmin M, Laukkanen P, Makela J, Yasir M, Tuominen M, Dahl J, Punkkinen MPJ, Kokko K, Hedman HP, Moon J, Punkkinen R, Lastusaari M, Polojarvi V, Korpijarvi VM, Guina M
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Oxidation of the GaAs semiconductor at the Al2O3/GaAs junction (2015)

Physical Chemistry Chemical Physics
Marjukka Tuominen, Muhammad Yasir, Jouko Lång, Johnny Dahl, Mikhail Kuzmin, Jaakko Mäkelä, Marko Punkkinen, Pekka Laukkanen, Kalevi Kokko, Karina Schulte, Risto Punkkinen, Ville-Markus Korpijärvi, Ville Polojärvi, Mircea Guina
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

The Energetic Particle Telescope: First Results (2014)

Space Science Reviews
V. Pierrard, G. Lopez Rosson, K. Borremans, J. Lemaire, J. Maes, S. Bonnewijn, E. Van Ransbeeck, E. Neefs, M. Cyamukungu, S. Benck, L. Bonnet, S. Borisov, J. Cabrera, G. Grégoire, C. Semaille, G. Creve, J. De Saedeleer, B. Desoete, F. Preud’homme, M. Anciaux, A. Helderweirt, K. Litefti, N. Brun, D. Pauwels, C. Quevrin, D. Moreau, R. Punkkinen, E. Valtonen, W. Hajdas, P. Nieminen
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Synthesis and Characterization of Layered Tin Monoxide Thin Films with Monocrystalline Structure on III–V Compound Semiconductor (2014)

Advanced Materials Interfaces
Pekka Laukkanen, Jouko Lång, Marko Punkkinen, Mikhail Kuzmin, Marjukka Tuominen, Muhammad Yasir, Johnny Dahl, Veikko Tuominen, Kalevi Kokko, Ville Polojärvi, Joel Salmi, Ville-Markus Korpijärvi, Arto Aho, Antti Tukiainen, Mircea Guina, Hannu-Pekka Hedman, Risto Punkkinen
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))