E
Ewa Placzek-Popko
Researcher at Wrocław University of Technology
Publications - 97
Citations - 843
Ewa Placzek-Popko is an academic researcher from Wrocław University of Technology. The author has contributed to research in topics: Deep-level transient spectroscopy & Molecular beam epitaxy. The author has an hindex of 14, co-authored 96 publications receiving 715 citations.
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New efficient solar cell structures based on zinc oxide nanorods
R. Pietruszka,Bartlomiej S. Witkowski,Sylwia Gieraltowska,P. Caban,Lukasz Wachnicki,E. Zielony,K. Gwozdz,P. Biegański,Ewa Placzek-Popko,Marek Godlewski +9 more
TL;DR: In this paper, a low temperature hydrothermal method was used to grow zinc oxide nanorods (ZnONR) on a p-type silicon surface, where the thickness of the ZnO layer was optimized to increase the light-trapping effect and thus the photovoltaic response.
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Top PV market solar cells 2016
TL;DR: In this paper, the best laboratory 1st and 2nd generation solar cells that were recently achieved are described and the scheme of the layer structure and energy band diagrams will be analyzed in order to explain the boost of their efficiency with reference to the earlier standard designs.
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Improved efficiency of n-ZnO/p-Si based photovoltaic cells by band offset engineering
R. Pietruszka,R. Schifano,Tomasz A. Krajewski,Bartlomiej S. Witkowski,Krzysztof Kopalko,Lukasz Wachnicki,E. Zielony,K. Gwozdz,P. Biegański,Ewa Placzek-Popko,Marek Godlewski +10 more
TL;DR: In this article, the authors showed a reduction of the conduction band offset from (0.63±0.03) eV to (0 48±0 eV when the Mg content is below 1.6 eV.
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ZnO/Si heterojunction solar cell fabricated by atomic layer deposition and hydrothermal methods
R. Pietruszka,Bartlomiej S. Witkowski,E. Zielony,K. Gwozdz,Ewa Placzek-Popko,Marek Godlewski +5 more
TL;DR: In this paper, the possibility of producing components of photovoltaic cells by employing atomic layer deposition and hydrothermal technologies was discussed, which does not require the use of hazardous chemicals and high temperatures.
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A deep acceptor defect responsible for the yellow luminescence in GaN and AlGaN
TL;DR: In this paper, the electrical and optical properties of deep defects in p-i-n GaN junction and AlGaN/GaN heterojunction are investigated by means of the deep level transient spectroscopy (DLTS), Laplace DLTS, and electroluminescence (EL) techniques.