Tetyana Nychyporuk
University of Lyon
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Publication
Featured researches published by Tetyana Nychyporuk.
Nanotechnology | 2013
Yuriy Zakharko; Tetyana Nychyporuk; L Bonacina; M. Lemiti; V. Lysenko
An original plasmonic nano-Ag/SiN(x) substrate was elaborated to strongly enhance the nonlinear response of SiC NPs for the first time. A plasmon-induced two order of magnitude increase of second-harmonic generation and two-photon excited photoluminescence was experimentally achieved. The measured enhancement factors were correlated with local field intensities theoretically estimated by finite-difference time-domain calculations. The obtained plasmon-enhanced nonlinear response of the SiC nanostructures make them promising in nonlinear optics applications.
Nanoscale | 2011
Tetyana Nychyporuk; Yu. Zakharko; Tetiana Serdiuk; O. Marty; M. Lemiti; V. Lysenko
Localization of quantum dots (QDs) in the vicinity of metal nanoparticles (NPs) is known as one of the most efficient ways to increase their photoluminescence (PL). Despite the important recent advances achieved in II-VI QDs, only a seven-fold plasmon-induced PL enhancement is reported for Si QDs. In our paper we show that the plasmon-induced strong local PL enhancement of Si QDs in an SiN matrix can reach a 60-fold gain level. This important result was achieved on original tunable nano-Ag/SiN(X) plasmonic structures. In particular, we show that (i) localization of Si QDs in hot spot regions created by several randomly arranged Ag NPs and (ii) careful tuning of the multi-polar plasmon bands of Ag NPs to match resonant absorption and emission wavelengths of Si QDs, lead to the important enhancement of their PL intensity.
Plasmonics | 2012
Yuriy Zakharko; Tetiana Serdiuk; Tetyana Nychyporuk; Alain Géloën; M. Lemiti; V. Lysenko
Strong photoluminescence enhancement of chemically inert and biocompatible SiC quantum dots (QDs) ensured by their near-field coupling with multipolar localized plasmons is experimentally demonstrated. The main physical mechanisms responsible for this phenomenon are described with the use of three-dimensional FDTD simulations. Nano-Ag/SiNX/glass plasmonic substrates were shown to be efficiently used for significant luminescence enhancement of fibroblast cells labeled with the SiC QDs. The proposed approach allows a plasmon-induced enhancement of fluorescent cell imaging.
Applied Physics Letters | 2009
Tetyana Nychyporuk; Yu. Zakharko; V. Lysenko; M. Lemiti
Interconnected Si nanocrystals forming homogeneous thin films with controlled bandgap values from 1.2 to 2.9 eV were formed by pulsed plasma enhanced chemical vapor deposition technique under dusty plasma conditions. The chosen values of plasma duration time correspond to specific phases of the dust nanoparticle growth. Structural and optical properties of the deposited nanostructured films are described in details. These nanocrystalline Si thin films seem to be promising candidates for all-Si tandem solar cell applications.
Solar Energy Materials and Solar Cells | 2010
Tetyana Nychyporuk; Z. Zhou; Alain Fave; M. Lemiti; Stéphane Bastide
Solar Energy Materials and Solar Cells | 2012
Stéphane Bastide; Tetyana Nychyporuk; Z. Zhou; Alain Fave; M. Lemiti
Archive | 2011
Tetyana Nychyporuk; Mustapha Lemiti
Nanoscale | 2012
Tetiana Serdiuk; Yu. Zakharko; Tetyana Nychyporuk; Alain Géloën; M. Lemiti; V. Lysenko
ACS Applied Nano Materials | 2018
Svitlana Gryn; Tetyana Nychyporuk; Igor Bezverkhyy; Dmytro Korytko; Viacheslav Iablokov; V. Lysenko; Sergei Alekseev
world conference on photovoltaic energy conversion | 2013
Thibaut Desrues; Isidro Martín García; S. de Vecchi; S. Abolmasov; Djicknoum Diouf; A. Lukyanov; Pablo Rafael Ortega Villasclaras; Mónica Alejandra Colina Brito; M. Versavel; M. Tuseau; F. Souche; Tetyana Nychyporuk; Marie-Estelle Gueunier-Farret; D. Muñoz; M. Lemiti; J.P. Kleider; P. Roca i Cabarrocas; Ramón Alcubilla González; Y. Schlumberger; P.J. Ribeyron