Department of Electronics and Nanoengineering

Electron Physics

The Electron Physics group is part of the Department of Electronics and Nanoengineering, Aalto University. Our research and education is focused on semiconductor materials and device physics. Our interests cover the whole scientific spectrum from fundamental physical phenomena to the search for cutting-edge applications in collaboration with leading industries. The current research activities include silicon-based photovoltaics and photodetectors, advanced characterization and nanofabrication techniques as well defect engineering in silicon. In addition to extensive facilities at Micronova Nanofabrication Centre, we use global research infrastructures in collaboration with our university and industry partners.
Hele Savin Group

Research topics

The group uses extensive clean room facitilites at Micronova Nanofabrication Centre for material research and device fabrication.

Latest publications

Fast Wafer-Level Characterization of Silicon Photodetectors by Photoluminescence Imaging

Hussein Ayedh, Wisa Förbom, Juha Heinonen, Ismo T. S. Heikkinen, Marko Yli-Koski, Ville Vähänissi, Hele Savin 2022 IEEE Transactions on Electron Devices

Tailoring Femtosecond-Laser Processed Black Silicon for Reduced Carrier Recombination Combined with >95% Above-Bandgap Absorption

Xiaolong Liu, Behrad Radfar, Kexun Chen, Toni Pasanen, Ville Vähänissi, Hele Savin 2022 Advanced Photonics Research

NO2 gas sensor with excellent performance based on thermally modified nitrogen-hyperdoped silicon

Wenjing Wang, Shengxiang Ma, Xiaolong Liu, Yang Zhao, Yuan Li, Hua Li, Xijing Ning, Li Zhao, Jun Zhuang 2022 Sensors and Actuators B: Chemical

Mid-long wavelength infrared absorptance of hyperdoped silicon via femtosecond laser microstructuring

Haibin Sun, Xiaolong Liu, Li Zhao, Jianxin Jia, Changhui Jiang, Jiamin Xiao, Yuwei Chen, Long Xu, Zhiyong Duan, Peng Rao, Shengli Sun 2022 Optics Express

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

Zahra Jahanshah Rad, Juha Pekka Lehtiö, Kexun Chen, Iris Mack, Ville Vähänissi, Mikko Miettinen, Marko Punkkinen, Risto Punkkinen, Petri Suomalainen, Hannu Pekka Hedman, Mikhail Kuzmin, Jekaterina Kozlova, Mihkel Rähn, university tart, Hele Savin, Pekka Laukkanen, Kalevi Kokko 2022 Vacuum

Characterization of Heavily Irradiated Dielectrics for Pixel Sensors Coupling Insulator Applications

S. Bharthuar, M. Golovleva, M. Bezak, E. Brücken, A. Gädda, J. Härkönen, A. Karadzhinova-Ferrer, N. Kramarenko, S. Kirschenmann, P. Koponen, P. Luukka, K. Mizohata, J. Ott, E. Tuominen 2022 Frontiers in materials

(oral talk) Carrier recombination in black silicon fabricated by high repetition rate fs-laser

Xiaolong Liu, Behrad Radfar, Toni Pasanen, Ville Vähänissi, Hele Savin 2022

(oral talk) Effect of anode sheet resistance on rise time of black silicon induced junction photodiodes

Juha Heinonen, Antti Haarahiltunen, Ville Vähänissi, Toni Pasanen, Hele Savin, Mikko Juntunen 2022
More information on our research in the Research database.
Research database

Associate Professor Hele Savin
Email: hele.savin at
Tel.: +358 50 5410 156

Postal address:
Department of Electronics and Nanoengineering
Aalto University School of Electrical Engineering
P.O. Box 13500, 00076 Aalto, Finland

Visiting address:
Micronova, 4th floor, room 4156
Tietotie 3, 02150 Espoo

  • Published:
  • Updated:
URL copied!