Zobrazeno 1 - 10
of 24
pro vyhledávání: '"Daif, Ounsi El"'
Autor:
Abdo, Islam, Trompoukis, Christos, Deckers, Jan, Depauw, Valérie, Tous, Loic, Van Gestel, Dries, Guindi, Rafik, Gordon, Ivan, Daif, Ounsi El
Publikováno v:
Abdo et al., IEEE Journal of Photovoltaics, Sept. 2014
The integration of two-dimensional (2D) periodic nanopattern defined by nanoimprint lithography and dry etching into aluminum induced crystallization (AIC) based polycrystalline silicon (Poly-Si) thin film solar cells is investigated experimentally.
Externí odkaz:
http://arxiv.org/abs/1507.08341
Autor:
Abdo, Islam, Trompoukis, Christos, Tous, Loic, Depauw, Valerie, Guindi, Rafik, Gordon, Ivan, Daif, Ounsi El
In the frame of the development of thin crystalline silicon solar cell technologies, surface nanopatterning of silicon is gaining importance. Its impact on the material quality is, however, not yet fully controlled.We investigate here the influence o
Externí odkaz:
http://arxiv.org/abs/1507.07819
Autor:
Jain, Samart, Depauw, Valerie, Miljkovic, Vladimir D., Dmitriev, Alexamder, Trompoukis, Christos, Gordon, Ivan, van Dorpe, Pol, Daif, Ounsi El
We propose a back-reflecting scheme in order to enhance the maximum achievable current in one micron thick crystalline silicon solar cells. We perform 3-dimensional numerical investigations of the scattering properties of metallic nanostructures loca
Externí odkaz:
http://arxiv.org/abs/1306.4116
Autor:
Daif, Ounsi El, Trompoukis, Christos, Niesen, Bjoern, Yaala, Marwa Ben, Sharma, Parikshit Pratim, Depauw, Valerie, Gordon, Ivan
We demonstrate a nanopatterning technique for silicon photovoltaics, which optically outperforms conventional micron-scale random pyramids, while decreasing by a factor of ten the quantity of silicon lost during the texturing process. We combine hole
Externí odkaz:
http://arxiv.org/abs/1305.6207
Publikováno v:
Appl. Phys. Lett. 101, 103901 (2012)
We report on the fabrication of two-dimensional periodic photonic nanostructures by nanoimprint lithography and dry etching, and their integration into a 1-{\mu}m-thin mono-crystalline silicon solar cell. Thanks to the periodic nanopatterning, a bett
Externí odkaz:
http://arxiv.org/abs/1212.3510
Publikováno v:
J. Appl. Phys. 112, 113107 (2012)
Patterning the front side of an ultra-thin crystalline silicon (c Si) solar cell helps keeping the energy conversion efficiency high by compensating for the light absorption losses. A super-Gaussian mathematical expression was used in order to encomp
Externí odkaz:
http://arxiv.org/abs/1208.2822
Autor:
Figeys, Bruno, Daif, Ounsi El
We numerically simulate, using finite-difference time-domain, the optical properties of silver nano discs deposited on the front surface of silicon solar cells. We explore the effect of each of the parameters of such a system, in order to draw some g
Externí odkaz:
http://arxiv.org/abs/1111.3791
Autor:
Daif, Ounsi El, Nardin, Gael, Paraiso, Taofiq K., Baas, Augustin, Richard, Maxime, Brantut, J. -P., Morier-Genoud, Francois, Deveaud-Pledran, Benoit, Guillet, Thierry
Publikováno v:
Applied Physics Letters, Vol 92, pages 081910 (2008)
We study the emission properties of confined polariton states in shallow zero-dimensional traps under non-resonant excitation. We evidence several relaxation regimes. For slightly negative photon-exciton detuning, we observe a nonlinear increase of t
Externí odkaz:
http://arxiv.org/abs/0905.3186
Absorption enhancement in amorphous silicon photonic crystals for thin film photovoltaic solar cells
Autor:
Daif, Ounsi El, Drouard, Emmanuel, Park, Yeonsang, Fave, Alain, Kaminski, Anne, Lemiti, Mustapha, Letartre, Xavier, Viktorovitch, Pierre, Ahn, Sungmo, Jeon, Heonsu, Seassal, Christian
We report on very high enhancement of thin layer's absorption through band-engineering of a photonic crystal structure. We realized amorphous silicon (aSi) photonic crystals, where slow light modes improve absorption efficiency. We show through simul
Externí odkaz:
http://arxiv.org/abs/0905.2204
Autor:
Daïf, Ounsi El, Baas, Augustin, Guillet, Thierry, Brantut, Jean-Philippe, Idrissi-Kaitouni, Reda, Staehli, Jean-Louis, Morier-Genoud, Francois, Deveaud, Benoit
Publikováno v:
Applied Physics Letters 88, 061105 (2006)
We report on the realization of polariton quantum boxes in a semiconductor microcavity under strong coupling regime. The quantum boxes consist of mesas that confine the cavity photon, etched on top of the spacer of a microcavity. For mesas with sizes
Externí odkaz:
http://arxiv.org/abs/cond-mat/0602665