K
K. Nogajewski
Researcher at Centre national de la recherche scientifique
Publications - 35
Citations - 3053
K. Nogajewski is an academic researcher from Centre national de la recherche scientifique. The author has contributed to research in topics: Exciton & Monolayer. The author has an hindex of 20, co-authored 34 publications receiving 2480 citations. Previous affiliations of K. Nogajewski include University of Warsaw.
Papers
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Journal ArticleDOI
Single photon emitters in exfoliated WSe2 structures.
Maciej Koperski,K. Nogajewski,Ashish Arora,V. Cherkez,Pierre Mallet,Jean-Yves Veuillen,Jacques Marcus,Piotr Kossacki,Marek Potemski +8 more
TL;DR: In this paper, optical micro-spectroscopy studies of thin layers of tungsten diselenide (WSe2), a representative semiconducting dichalcogenide with a bandgap in the visible spectral range.
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Excitonic resonances in thin films of WSe2: from monolayer to bulk material
Ashish Arora,Maciej Koperski,Maciej Koperski,K. Nogajewski,Jacques Marcus,Clément Faugeras,Marek Potemski +6 more
TL;DR: In this article, optical spectroscopy studies of thin layers of the transition metal dichalcogenide WSe2, with thickness ranging from mono-to tetra-layer and in the bulk limit, are presented.
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Brightening of dark excitons in monolayers of semiconducting transition metal dichalcogenides
Maciej R. Molas,Clément Faugeras,A. O. Slobodeniuk,K. Nogajewski,Miroslav Bartos,Miroslav Bartos,Denis M. Basko,Marek Potemski +7 more
TL;DR: In this paper, low-temperature magneto-photoluminescence experiments were conducted to demonstrate the brightening of dark excitons by an in-plane magnetic field B applied to monolayers of different semiconducting transition metal dichalcogenides.
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Optical properties of atomically thin transition metal dichalcogenides: observations and puzzles
Maciej Koperski,Maciej Koperski,Maciej R. Molas,Ashish Arora,Ashish Arora,K. Nogajewski,A. O. Slobodeniuk,Clément Faugeras,Marek Potemski,Marek Potemski +9 more
TL;DR: In this paper, the optical properties of mono-and few-layer semiconducting transition metal dichalcogenides are reviewed and discussed in the frame of existing models, highlighting the limits of our understanding in this emerging field of research.
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The direct-to-indirect band gap crossover in two-dimensional van der Waals Indium Selenide crystals
Garry W. Mudd,Maciej R. Molas,Xi Chen,Viktor Zólyomi,K. Nogajewski,Zakhar R. Kudrynskyi,Zakhar D. Kovalyuk,Go Yusa,Oleg Makarovsky,Laurence Eaves,Marek Potemski,Vladimir I. Fal'ko,Amalia Patanè +12 more
TL;DR: This work uses density functional theory and high field magneto-optics to investigate the metal chalcogenide InSe, a recent addition to the family of van der Waals layered crystals, which transforms from a direct to an indirect band gap semiconductor as the number of layers is reduced.