High‐efficiency GaInP/GaAs/GaInNAs solar cells grown by combined MBE‐MOCVD technique A Tukiainen, A Aho, G Gori, V Polojärvi, M Casale, E Greco, R Isoaho, ... Progress in Photovoltaics: Research and Applications 24 (7), 914-919, 2016 | 48 | 2016 |
Monolithic GaInNAsSb/GaAs VECSEL operating at 1550 nm VM Korpijärvi, EL Kantola, T Leinonen, R Isoaho, M Guina IEEE Journal of Selected Topics in Quantum Electronics 21 (6), 480-484, 2015 | 40 | 2015 |
Room-temperature electron spin polarization exceeding 90% in an opto-spintronic semiconductor nanostructure via remote spin filtering Y Huang, V Polojärvi, S Hiura, P Höjer, A Aho, R Isoaho, T Hakkarainen, ... Nature Photonics 15 (6), 475-482, 2021 | 35 | 2021 |
Lattice‐matched four‐junction tandem solar cell including two dilute nitride bottom junctions A Aho, R Isoaho, L Hytönen, T Aho, M Raappana, V Polojärvi, ... Progress in Photovoltaics: Research and Applications 27 (4), 299-305, 2019 | 29 | 2019 |
Temperature coefficients for GaInP/GaAs/GaInNAsSb solar cells A Aho, R Isoaho, A Tukiainen, V Polojärvi, T Aho, M Raappana, M Guina AIP Conference Proceedings 1679 (1), 2015 | 27 | 2015 |
Photovoltaic properties of low-bandgap (0.7–0.9 eV) lattice-matched GaInNAsSb solar junctions grown by molecular beam epitaxy on GaAs R Isoaho, A Aho, A Tukiainen, T Aho, M Raappana, T Salminen, J Reuna, ... Solar Energy Materials and Solar Cells 195, 198-203, 2019 | 26 | 2019 |
Wide spectral coverage (0.7–2.2 eV) lattice‐matched multijunction solar cells based on AlGaInP, AlGaAs and GaInNAsSb materials A Aho, R Isoaho, M Raappana, T Aho, E Anttola, J Lyytikäinen, ... Progress in Photovoltaics: Research and Applications 29 (7), 869-875, 2021 | 23 | 2021 |
Determination of composition and energy gaps of GaInNAsSb layers grown by MBE A Aho, VM Korpijärvi, R Isoaho, P Malinen, A Tukiainen, M Honkanen, ... Journal of Crystal Growth 438, 49-54, 2016 | 23 | 2016 |
Dilute nitride triple junction solar cells for space applications: Progress towards highest AM0 efficiency A Aho, R Isoaho, A Tukiainen, G Gori, R Campesato, M Guina Progress in Photovoltaics: Research and Applications 26 (9), 740-744, 2018 | 22 | 2018 |
31% European InGaP/GaAs/InGaNAs solar cells for space application R Campesato, A Tukiainen, A Aho, G Gori, R Isoaho, E Greco, M Guina Proceedings of the 11th European Space Power Conference 2016, 2017 | 20 | 2017 |
Microdisk lasers based on GaInNAs (Sb)/GaAs (N) quantum wells NV Kryzhanovskaya, EI Moiseev, YS Polubavkina, FI Zubov, MV Maximov, ... Journal of Applied Physics 120 (23), 2016 | 11 | 2016 |
Thin-film InAs/GaAs quantum dot solar cell with planar and pyramidal back reflectors T Aho, F Elsehrawy, A Tukiainen, S Ranta, M Raappana, R Isoaho, A Aho, ... Applied Optics 59 (21), 6304-6308, 2020 | 10 | 2020 |
High performance low-bandgap (0.8 eV) single junction GaInNAsSb solar cells incorporating Au-based back surface reflectors R Isoaho, T Aho, A Aho, A Tukiainen, J Reuna, M Raappana, M Guina Solar Energy Materials and Solar Cells 234, 111413, 2022 | 9 | 2022 |
Use of nanostructured alumina thin films in multilayer anti-reflective coatings J Reuna, A Aho, R Isoaho, M Raappana, T Aho, E Anttola, A Hietalahti, ... Nanotechnology 32 (21), 215602, 2021 | 9 | 2021 |
Optical Performance Assessment of Nanostructured Alumina Multilayer Antireflective Coatings Used in III–V Multijunction Solar Cells J Reuna, A Hietalahti, A Aho, R Isoaho, T Aho, M Vuorinen, A Tukiainen, ... ACS Applied Energy Materials 5 (5), 5804-5810, 2022 | 8 | 2022 |
Influence of ex-situ annealing on the properties of MgF2 thin films deposited by electron beam evaporation J Reuna, V Polojärvi, P Pääkkönen, K Lahtonen, M Raappana, T Aho, ... Optical Materials 96, 109326, 2019 | 8 | 2019 |
Performace of dilute nitride triple junction space solar cell grown by MBE A Aho, R Isoaho, A Tukiainen, V Polojärvi, M Raappana, T Aho, M Guina 11th European Space Power Conference, 3-7 October 2016 Thessaloniki, Greece, 2017 | 8 | 2017 |
High power GaInNAs superluminescent diodes emitting over 400 mW in the 1.2 μm wavelength range AT Aho, J Viheriälä, H Virtanen, N Zia, R Isoaho, M Guina Applied Physics Letters 115 (8), 2019 | 5 | 2019 |
Data transmission at 1300 nm using optical interposer comprising hybrid integrated silicon waveguide and dilute nitride electroabsorption modulator RN Sheehan, M Guina, J Viheriälä, R Isoaho, M Harjanne, F Azarello, ... Optics Express 26 (26), 34336-34345, 2018 | 5 | 2018 |
Investigation of the effect of surface passivation on microdisk lasers based on InGaAsN/GaAs quantum well active region EI Moiseev, NV Kryzhanovskaya, MV Maximov, AM Mozharov, ... Journal of Physics: Conference Series 917 (5), 052002, 2017 | 5 | 2017 |