Activities

Activities per year 2012 2017 2022 2023 2024 2024

• 28 Conference presentation
• 6 Invited academic talk
• 3 Visiting an external academic institution
• 1 Organization of a workshop, panel, session, tutorial or event

Activities per year

Search results

• Effect Of The Morphology Of Black Silicon Passivated By Alumina On The Performance Of Interdigitated Back Contact Solar Cells

  Nabil Khelifati (Contributor), Ozan Aydın (Speaker), Bülent Arıkan (Contributor), Ghania Fortas (Contributor), Leila Harkat (Contributor), Ville Vähänissi (Contributor), Xiaolong Liu (Contributor), Faouzi Kezzoula (Contributor) & Raşit Turan (Contributor)

  5 Jul 2024

  Activity: Talk or presentation types › Conference presentation

• PREIN WP4 Photovoltaics Workshop

  Ville Vähänissi (Chair) & Hele Savin (Member)

  4 Jun 2024 → 6 Jun 2024

  Activity: Participating in or organising an event types › Organization of a workshop, panel, session, tutorial or event

• Hyperdoping germanium with titanium via femtosecond laser processing

  Xiaolong Liu (Speaker), Dmytro Gnatyuk (Contributor), Ville Vähänissi (Contributor) & Hele Savin (Speaker)

  17 Sept 2024

  Activity: Talk or presentation types › Conference presentation

• Impact of upconverting atomic layer deposited Er2O3 on Si solar cell surface passivation

  Radfar, B. (Speaker), Ghazy, A. (Contributor), Liu, X. (Contributor), Vähänissi, V. (Contributor), Karppinen, M. (Contributor) & Savin, H. (Contributor)

  30 May 2024

  Activity: Talk or presentation types › Conference presentation

• Sulfur-hyperdoped silicon by ultrashort laser processing

  Schäfer, S. (Speaker), Mc Kearney, P. (Contributor), Paulus, S. (Contributor), Liu, X. (Contributor), Radfar, B. (Speaker), Vähänissi, V. (Contributor), Mutschall, D. (Contributor), Koskinen, V. (Contributor), Serue, M. (Contributor), Niemeyer, T. (Contributor), Seibt, M. (Contributor), Savin, H. (Contributor) & Kontermann, S. (Contributor)

  16 Sept 2024

  Activity: Talk or presentation types › Invited academic talk

• Effective carrier lifetime in ultrashort pulse laser hyperdoped silicon: dopant concentration dependence and practical upper limits

  Schäfer, S. (Speaker), Liu, X. (Contributor), Mc Kearney, P. (Contributor), Paulus, S. (Contributor), Radfar, B. (Contributor), Vähänissi, V. (Contributor), Savin, H. (Contributor) & Kontermann, S. (Contributor)

  18 Sept 2023

  Activity: Talk or presentation types › Conference presentation

• Controlling SiO2 thin film charge and interface defect density on germanium

  Liu, H. (Speaker), Pasanen, T. (Contributor), Leiviskä, O. (Contributor), Isometsä, J. (Contributor), Fung, J. (Contributor), Yli-Koski, M. (Contributor), Miettinen, M. (Contributor), Laukkanen, P. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  8 Sept 2023

  Activity: Talk or presentation types › Conference presentation

• Electroless excitation of semiconductors through semiconductor-liquid interfaces

  Oksanen, J. (Speaker), Li, S. (Contributor), Chen, K. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  12 Apr 2023

  Activity: Talk or presentation types › Conference presentation

• Nanostructured Silicon Hyperdoped with Se by Ion Implantation and Flash Lamp Annealing

  Radfar, B. (Speaker), Liu, X. (Contributor), Prucnal, S. (Contributor), Shaikh, M. S. (Contributor), Kentsch, U. (Contributor), Vähänissi, V. (Contributor), Berencén, Y. (Contributor), Zhou, S. (Contributor) & Savin, H. (Contributor)

  19 Sept 2023

  Activity: Talk or presentation types › Conference presentation

• Excellent Responsivity and Low Dark Current Obtained with Metal-Assisted Chemical Etched Si Photodiode

  Savin, H. (Invited speaker), Chen, K. (Contributor), Setälä, O. (Contributor), Liu, X. (Contributor), Radfar, B. (Contributor) & Vähänissi, V. (Contributor)

  31 Oct 2023

  Activity: Talk or presentation types › Conference presentation

• Surface Passivation and Charge Transfer at TiO2/Si Interface

  Xiaolong Liu (Speaker), Ramsha Khan (Contributor), Hannu Pasanen (Contributor), Harri Ali-Löytty (Contributor), Ville Vähänissi (Contributor), Mika Valden (Contributor), Nikolai V. Tkachenko (Contributor) & Hele Savin (Contributor)

  8 Sept 2023

  Activity: Talk or presentation types › Conference presentation

• Improved QE in CMOS image sensors with nano-black antireflection layer

  Prest, M. J. (Speaker), Setälä, O. (Contributor), Stefanov, K. D. (Contributor), Vähänissi, V. (Contributor), Savin, H. (Contributor) & Jordan, D. (Contributor)

  21 May 2023 → 25 May 2023

  Activity: Talk or presentation types › Conference presentation

• Compatibility of Al-neal in processing of Si devices with Al₂O₃ layer

  Setälä, O. (Speaker), Pasanen, T. (Contributor), Ott, J. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  11 Sept 2022 → 16 Sept 2022

  Activity: Talk or presentation types › Conference presentation

• Record-high UV response in implanted junctions through passivation of surface defects and minimisation of boron implantation damage

  Chen, K. (Speaker), Setälä, O. (Contributor), Radfar, B. (Contributor), Kroth, U. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  14 Sept 2022

  Activity: Talk or presentation types › Conference presentation

• Carrier recombination in black silicon fabricated by high repetition rate fs-laser

  Liu, X. (Speaker), Radfar, B. (Contributor), Pasanen, T. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  30 May 2022 → 3 Jun 2022

  Activity: Talk or presentation types › Conference presentation

• Controlling charge polarity and defect density at Ge/Al2O3 interface using SiNx interlayer

  Liu, H. (Speaker), Pasanen, T. (Contributor), Fung, T. H. (Contributor), Isometsä, J. (Contributor), Leiviskä, O. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  13 Sept 2022

  Activity: Talk or presentation types › Conference presentation

• Nanostructuring process to minimize reflective losses in optoelectronic devices

  Repo, P. (Speaker), Pasanen, T. (Contributor), Vähänissi, V. (Contributor), Isometsä, J. (Contributor), Chen, K. (Contributor), Garin, M. (Contributor) & Savin, H. (Contributor)

  19 Jun 2021

  Activity: Talk or presentation types › Conference presentation

• 2021 Material Research Society (MRS) Conference (Boston, USA): Black silicon for PV—Which fabrication technology to choose?

  Liu, X. (Contributor), Radfar, B. (Contributor), Chen, K. (Contributor), Setälä, O. (Contributor), Pasanen, T. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Invited speaker)

  6 Dec 2021

  Activity: Talk or presentation types › Invited academic talk

• Temperature dependency of responsivity and dark current of nearly ideal black silicon photodiodes

  Heinonen, J. (Contributor), Haarahiltunen, A. (Contributor), Serue, M. (Contributor), Kriukova, D. (Contributor), Vähänissi, V. (Contributor), Pasanen, T. (Contributor), Savin, H. (Contributor), Werner, L. (Contributor) & Juntunen, M. (Speaker)

  5 Mar 2021

  Activity: Talk or presentation types › Conference presentation

• High-sensitivity NIR photodiodes using black silicon

  Heinonen, J. (Contributor), Haarahiltunen, A. (Contributor), Serué, M. (Contributor), Vähänissi, V. (Contributor), Pasanen, T. (Contributor), Savin, H. (Contributor), Werner, L. (Contributor) & Juntunen, M. (Speaker)

  4 Feb 2020

  Activity: Talk or presentation types › Conference presentation

• Proof of concept: ARC-free black interdigitated back contact module with wide acceptance angle

  Ortega, P. (Contributor), Pasanen, T. (Speaker), Garin, M. (Contributor), von Gastrow, G. (Contributor), Savisalo, T. (Contributor), Tolvanen, A. (Contributor), Vahlman, H. (Contributor), Vähänissi, V. (Contributor), Carrio, D. (Contributor), Alcubilla, R. (Contributor) & Savin, H. (Contributor)

  6 Feb 2020

  Activity: Talk or presentation types › Conference presentation

• Nanostructured germanium for near-infrared sensors with >99 % absorption up to 1600-nm wavelength

  Pasanen, T. (Speaker), Isometsä, J. (Contributor), Garin, M. (Contributor), Chen, K. (Contributor), Vähänissi, V. (Contributor), Soldano, C. (Contributor) & Savin, H. (Contributor)

  4 Feb 2020

  Activity: Talk or presentation types › Conference presentation

• Doping in silicon affects the blistering of ALD-grown aluminium oxide

  Ott, J. (Speaker), Garin, M. (Contributor), Rosta, K. (Contributor), Pasanen, T. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  26 Sept 2019

  Activity: Talk or presentation types › Conference presentation

• Dissociation and formation kinetics of iron-boron pairs in silicon after phosphorus implantation gettering

  Nabil Khelifati (Contributor), Hannu Laine (Contributor), Ville Vähänissi (Contributor), Hele Savin (Contributor), Fatima Zohra Bouamama (Contributor) & Djoudi Bouhafs (Contributor)

  22 Sept 2019 → 27 Sept 2019

  Activity: Talk or presentation types › Conference presentation

• Passivation of detector-grade Fz-Si with atomic layer deposited aluminium oxide

  Pasanen, T. (Speaker), Ott, J. (Contributor), Repo, P. (Contributor), Seppänen, H. (Contributor), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  23 Sept 2019

  Activity: Talk or presentation types › Conference presentation

• Patternability of quasi-mono silicon beyond the photovoltaic industry

  Zhengjun Liu (Speaker), Ville Vähänissi (Contributor) & Hele Savin (Contributor)

  2018

  Activity: Talk or presentation types › Conference presentation

• SoG Silicon and PV Power Conference: Elimination of light-induced degradation by black silicon

  Pasanen, T. (Invited speaker), Modanese, C. (Contributor), Vähänissi, V. (Contributor), Laine, H. (Contributor), Wolny, F. (Contributor), Oehlke, A. (Contributor), Heikkinen, I. T. S. (Contributor), Wagner, M. (Contributor) & Savin, H. (Contributor)

  10 Nov 2018

  Activity: Talk or presentation types › Invited academic talk

• Elimination of light-induced degradation by black silicon

  Pasanen, T. P. (Speaker), Modanese, C. (Contributor), Vähänissi, V. (Contributor), Laine, H. (Contributor), Wolny, F. (Contributor), Oehlke, A. (Contributor), Kusterer, C. (Contributor), Heikkinen, I. T. S. (Contributor), Wagner, M. (Contributor) & Savin, H. (Contributor)

  25 Sept 2018

  Activity: Talk or presentation types › Conference presentation

• Passivation of black silicon phosphorus emitters with atomic layer deposited SiO2/Al2O3 stacks

  Pasanen, T. (Speaker), Vähänissi, V. (Contributor) & Savin, H. (Contributor)

  3 Apr 2017

  Activity: Talk or presentation types › Conference presentation

• Increasing yield of cast-silicon ingots via Tabula Rasa anneal

  Laine, H. (Speaker), Vähänissi, V. (Contributor), Liu, Z. (Contributor), Pasanen, T. (Contributor), Haarahiltunen, A. (Contributor), Yli-Koski, M. (Contributor) & Savin, H. (Contributor)

  4 Apr 2017

  Activity: Talk or presentation types › Conference presentation

• 2017 Materials Research Society MRS Conference (Boston, USA): Enhanced iron gettering with black silicon

  Pasanen, T. (Contributor), Laine, H. (Contributor), Vähänissi, V. (Contributor), Schön, J. (Contributor) & Savin, H. (Invited speaker)

  29 Nov 2017

  Activity: Talk or presentation types › Invited academic talk

• 17th Conference on Gettering and Defect Engineering in Semiconductors: Enhanced iron gettering with black silicon, Telavi, Georgia

  Pasanen, T. (Contributor), Laine, H. (Contributor), Vähänissi, V. (Contributor), Schön, J. (Contributor) & Savin, H. (Invited speaker)

  3 Oct 2017

  Activity: Talk or presentation types › Invited academic talk

• Efficient Surface Passivation of Black Silicon Using Spatial ALD

  Heikkinen, I. T. S. (Contributor), Repo, P. (Contributor), Vähänissi, V. (Contributor), Pasanen, T. (Contributor), Malinen, V. (Contributor), Salmi, E. (Speaker) & Savin, H. (Contributor)

  17 Jul 2017

  Activity: Talk or presentation types › Conference presentation

• Foreign Organisation

  Ville Vähänissi (Visiting researcher)

  15 Jun 2016

  Activity: Visiting an external institution types › Visiting an external academic institution

• Naps Solar Estonia OÜ

  Pasanen, T. (Visiting researcher), Heinonen, J. (Visiting researcher), Vähänissi, V. (Visiting researcher), Repo, P. (Visiting researcher), Modanese, C. (Visiting researcher) & Savin, H. (Visiting researcher)

  20 Jun 2016

  Activity: Visiting an external institution types › Visiting an external academic institution

• Modeling the size distribution of iron precipitates in phosphorus-implanted emitters

  Hannu Laine (Contributor), Ville Vähänissi (Contributor), Marko Yli-Koski (Contributor), Zhengjun Liu (Contributor) & Hele Savin (Contributor)

  2014 → …

  Activity: Talk or presentation types › Conference presentation

• SolarWorld Innovations GmbH

  Ville Vähänissi (Visiting researcher)

  2014

  Activity: Visiting an external institution types › Visiting an external academic institution

• Electrochemical Society Meeting (Honolulu, USA): Modeling of boron and phosphorus diffusion gettering of iron silicon

  Antti Haarahiltunen (Invited speaker), Ville Vähänissi (Contributor) & Hele Savin (Contributor)

  Oct 2012

  Activity: Talk or presentation types › Invited academic talk