Ice resistance of hydrophobic fluoropolymerized nanostructured alumina films for antireflective coatings
Jarno Reuna, Raul Kanter , Niklas Kandelin , Kaisa Kiuru , Heli Koivuluoto and Mircea Guina
Publications
Publications 2023
Publications 2022
Optimized molecular beam epitaxy process for lattice-matched narrow-bandgap (0.8 eV) GaInNAsSb solar junctions
Riku Isoaho, Antti Tukiainen, Juuso Puutio, Arttu Hietalahti, Jarno Reuna, Antti Fihlman, Elina Anttola, Miika Keränen, Arto Aho, Mircea Guina
Optimization of reactive ion beam sputtered Ta2O5 for III–V compounds
Jarno Reuna, Marianna Vuorinen, Riku Isoaho, Arto Aho, Severi Mäkelä, Arttu Hietalahti, Elina Anttola, Antti Tukiainen, Mircea Guina
Epitaxial lift-off process for GaAs solar cells controlled by InGaAs internal sacrificial stressor layers and a PMMA surface stressor
Prabudeva Ramu, Arto Aho, Ville Polojärvi, Timo Aho, Antti Tukiainen, Teemu Hakkarainen, Jarno Reuna, Jari Lyytikäinen, Roosa Hytönen, Mircea Guina
Optical Performance Assessment of Nanostructured Alumina Multilayer Antireflective Coatings Used in III–V Multijunction Solar Cells
Jarno Reuna, Arttu Hietalahti, Arto Aho, Riku Isoaho, Timo Aho, Marianna Vuorinen, Antti Tukiainen, Elina Anttola, and Mircea Guina
Bandgap energy model for GaInNAsSb/GaAs alloys with high N content and strain influence
Riku Isoaho, Arto Aho, Antti Tukiainen, Turkka Salminen and Mircea Guina
Publications 2021
High performance low-bandgap (0.8 eV) single junction GaInNAsSb solar cells incorporating Au-based back surface reflectors
Riku Isoaho, Timo Aho, Arto Aho, Antti Tukiainen, Jarno Reuna, Marianna Raappana and Mircea Guina
Nonselective etching of As and P based III‒V solar cell heterostructures with aqueous solutions of HIO3 and HCl
Marianna Raappana, Tomi Koikkalainen, Ville Polojärvi, Arto Aho, Timo Aho, Riku Isoaho, Antti Tukiainen, and Mircea Guina
Hybrid quasi-3D optimization of grid architecture for single junction photovoltaic converters
Veikka Nikander, Jianguo Wei, Arto Aho, Ville Polojarvi, Antti Tukiainen, and Mircea Guina
Room-temperature electron spin polarization exceeding 90% in an opto-spintronic semiconductor nanostructure via remote spin filtering
Yuqing Huang, Ville Polojärvi, Satoshi Hiura, Pontus Höjer, Arto Aho, Riku Isoaho, Teemu Hakkarainen, Mircea Guina, Shino Sato, Junichi Takayama, Akihiro Murayama, Irina A. Buyanova, and Weimin M. Chen
Wide spectral coverage (0.7–2.2 eV) lattice‐matched multijunction solar cells based on AlGaInP, AlGaAs and GaInNAsSb materials
Arto Aho, Riku Isoaho, Marianna Raappana, Timo Aho, Elina Anttola, Jari Lyytikäinen, Arttu Hietalahti, Ville Polojärvi, Antti Tukiainen, Jarno Reuna, Leo Peltomaa, and Mircea Guina
Use of Nanostructured Alumina Thin Films in Multilayer Anti-Reflective Coatings
Jarno Reuna, Arto Aho, Riku Isoaho, Marianna Raappana, Timo Aho, Elina Anttola, Arttu Hietalahti, Antti Tukiainen, and Mircea Guina
Publications 2020
Thin-film InAs/GaAs quantum dot solar cell with planar and pyramidal back reflectors
Timo Aho, Farid Elsehrawy, Antti Tukiainen, Sanna Ranta, Marianna Raappana, Riku Isoaho, Arto Aho, Arttu Hietalahti, Federica Cappelluti, and Mircea Guina
Quasi-3D Optimization of Grid Architecture for Photovoltaic Converters Using Solcore
Veikka Nikander, Jianguo Wei, Arto Aho, Ville Polojärvi, Antti Tukiainen, and Mircea Guina
Luminescent (Er,Ho)2O3 thin films by ALD to enhance the performance of silicon solar cells
Amr Ghazy, Muhammad Safdar, Mika Lastusaari, Arto Aho, Antti Tukiainen, Hele Savin, Mircea Guina, and Maarit Karppinen
Advanced grid concept with external busbars applied on III-V multijunction solar cells
Marianna Raappana, Ninja Kajas, Arto Aho, Ville Polojärvi, Timo Aho, Riku Isoaho, Antti Tukiainen, and Mircea Guina
Quantum Dot-Based Thin-Film III–V Solar Cells
F. Cappelluti, A. Tukiainen, T. Aho, F. Elsehrawy, N. Gruginskie, M. van Eerden, G. Bissels, A. Tibaldi, G. J. Bauhuis, P. Mulder, A. Khalili, E. Vlieg, J. J. Schermer, M. Guina
Raman spectroscopy of GaSb1−xBix alloys with high Bi content
S. Souto, J. Hilska, Y. Galvão Gobato, D. Souza, M. B. Andrade, E. Koivusalo, J. Puustinen, and M. Guina
Publications 2019
Performance Study of Lattice-Matched Multijunction Solar Cells Incorporating GaInNAsSb Junctions with 0.7 - 1.4 eV Bandgap
Arto Aho, Riku Isoaho, Marianna Raappana, Timo Aho, Ville Polojärvi, Antti Tukiainen, Elina Anttola, Severi Mäkelä, Jarno Reuna, and Mircea Guina
High Efficiency Lattice-Matched 4J Space Solar Cells on GaAs
Arto Aho, Marianna Raappana, Riku Isoaho, Timo Aho, Ville Polojärvi, Antti Tukiainen, Elina Anttola, Severi Mäkelä, Jarno Reuna, Arttu Hietalahti, Mircea Guina
Narrow Bandgap Dilute Nitride Materials for 6- junction Space Solar Cells
Riku Isoaho, Arto Aho, Antti Tukiainen, Timo Aho, Marianna Raappana, Turkka Salminen, Jarno Reuna, Mircea Guina
Back Reflector with Diffractive Gratings for Light- Trapping in Thin-Film III-V Solar Cells
Timo Aho, Antti Tukiainen, Farid Elsehrawy, Sanna Ranta, Marianna Raappana, Arto Aho, Riku Isoaho, Federica Cappelluti, Mircea Guina
Performance of Solar Cell Grids based on Ag, Au, and Al for Cost-Effective Manufacturing
Marianna Raappana, Arto Aho, Timo Aho, Riku Isoaho, Elina Anttola, Ninja Kajas, Ville Polojärvi, Antti Tukiainen, Mircea Guina
Enhancement of EQE for MBE grown InAs/GaAs Quantum Dot Solar Cell with Back Reflector
Timo Aho, Antti Tukiainen, Sanna Ranta, Farid Elsehrawy, Marianna Raappana, Riku Isoaho, Arto Aho, Federica Cappelluti, and Mircea Guina
Influence of ex-situ annealing on the properties of MgF2 thin films deposited by electron beam evaporation
Jarno Reuna, Ville Polojärvi, Pertti Pääkkönen, Kimmo Lahtonen, Marianna Raappana, Timo Aho, Riku Isoaho, Arto Aho, Mika Valden and Mircea Guina, Optical Materials
Photovoltaic properties of low-bandgap (0.7-0.9 eV) lattice-matched GaInNAsSb solar junctions grown by molecular beam epitaxy on GaAs
Riku Isoaho, Arto Aho, Antti Tukiainen, Timo Aho, Marianna Raappana, Turkka Salminen, Jarno Reuna, and Mircea Guina, Solar Energy Materials and Solar Cells
Analysis of GaAsBi growth regimes in high resolution with respect to As/Ga ratio using stationary MBE growth
J. Puustinen, J. Hilska, M. Guina, Journal of Crystal Growth
Publications 2018
Lattice‐matched four‐junction tandem solar cell including two dilute nitride bottom junctions
Arto Aho Riku Isoaho Lauri Hytönen Timo Aho Marianna Raappana Ville Polojärvi Antti Tukiainen Jarno Reuna Severi Mäkelä Mircea Guina, Progress in Photovoltaics
Dilute nitride triple junction solar cells for space applications: Progress towards highest AM0 efficiency
Arto Aho Riku Isoaho Antti Tukiainen Gabriele Gori Roberta Campesato Mircea Guina, Progress in Photovoltaics
Metal/Polymer Back Reflectors with Diffraction Gratings for Light Trapping in III-V Solar Cells
Aho, T, Guina, M, Elsehrawy, F, Cappelluti, F, Raappana, M, Tukiainen, A, Khairul Alam, ABM, Vartiainen, I, Kuittinen, M & Niemi, IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC): A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC
Comparison of metal/polymer back reflectors with half-sphere, blazed, and pyramid gratings for light trapping in III-V solar cells
Aho, T, Guina, M, Elsehrawy, F, Cappelluti, F, Raappana, M, Tukiainen, A, Khairul Alam, ABM, Vartiainen, I, Kuittinen, M & Niemi, T, Optics Express
Wet etching of dilute nitride GaInNAs, GaInNAsSb, and GaNAsSb alloys lattice-matched to GaAs
Marianna Raappana, Ville Polojärvi, Arto Aho, Jaakko Mäkelä, Timo Aho, Antti Tukiainen, Pekka Laukkanen, MirceaGuina, Corrosion Science
Chapter 5 - Molecular Beam Epitaxy of Dilute Nitride Optoelectronic Devices
Mircea Guina, Shu M. Wang, Arto Aho, Molecular Beam Epitaxy From Research to Mass Production Book • 2nd Edition • 2018
Publications 2017
Design considerations on GaInNAs solar cells with back surface reflectors
Antti Tukiainen, Arto Aho, Timo Aho, Ville Polojärvi, Mircea Guina, 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
Temperature dependent characteristics of GaInP/GaAs/GaInNAsSb solar cell under simulated AM0 spectra
Riku Isoaho, Arto Aho, Antti Tukiainen, Mircea Guina, 2017 IEEE 44th Photovoltaic Specialist Conference (PVSC)
Performace of Dilute Nitride Triple Junction Space Solar Cell Grown by MBE
Arto Aho, Riku Isoaho, Antti Tukiainen, Ville Polojärvi, Marianna Raappana, Timo Aho, Mircea Guina, E3S Web of Conferences
Publications 2016
Enhancement of Photocurrent in GaInNAs Solar Cells using Ag/Cu Double-Layer Back Reflector' Applied Physics Letters
Aho, T, Aho, A, Tukiainen, A, Polojärvi, V, Salminen, T, Raappana, M & Guina, Applied Physics Letters