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

Contact

Links

Risto Punkkinen CV 31 Jan 2022.pdf
Ten important and cited publications Jan 2022.pdf

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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Properties and modification of native oxides of InP(100) (2023)

Journal of Physics D: Applied Physics
Ebrahimzadeh Masoud, Vuori Sami, Miettinen Mikko, Lehtiö Juha-Pekka, Granroth Sari, Punkkinen Marko P. J., Jahanshah Rad Zahra Sadat, Punkkinen Risto, Kuzmin Mikhail, Laukkanen Pekka, Lastusaari Mika, Kokko Kalevi
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Effects of post oxidation of SiO2/Si interfaces in ultrahigh vacuum below 450 °C (2022)

Vacuum
Jahanshah Rad Zahra, Lehtiö Juha-Pekka, Chen Kexun, Mack Iris, Vähänissi Ville, Miettinen Mikko, Punkkinen Marko, Punkkinen Risto, Suomalainen Petri, Hedman Hannu-Pekka, Kuzmin Mikhail, Kozlova Jekaterina, Rähn Mihkel, Tamm Aile, Savin Hele, Laukkanen Pekka, Kokko Kalevi
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Aalto-1, multi-payload CubeSat: design, integration and launch (2021)

Acta Astronautica
Praks J., Mughal M. Rizwan, Vainio R., Janhunen P., Envall J., Oleynik P., Näsilä A., Leppinen H., Niemelä P., Slavinskis A., Gieseler J., Toivanen P., Tikka T., Peltola T., Bosser A., Schwarzkopf G., Jovanovic N., Riwanto B., Kestilä A., Punkkinen A., Punkkinen R., Hedman H.-P., Säntti T., Lill J.-O., Slotte J.M.K., Kettunen H., Virtanen A.
(Vertaisarvioitu alkuperäisartikkeli tai data-artikkeli tieteellisessä aikakauslehdessä (A1))

Particle Telescope PATE onboard FORESAIL-1 CubeSat (2021)

COSPAR Scientific Assembly
Gieseler Jan, Janhunen Pekka, Kilpua Emilia, Vainio Rami, Palmroth Minna, Oleynik Philipp, Hedman Hannu-Pekka, Punkkinen Arttu, Punkkinen Risto, Salomaa Lassi, Säntti Tero, Tuominen Jarno, Virtanen Pasi, Praks Jaan, Slavinskis Andris, Rameez Kakakhel Syed, Plosila Juha, Tammi Jani, Tenhunen Hannu, Westerlund Tomi
(Muu (O2))
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