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Stéphane Kéna-Cohen
B.Eng. (McGill), M.A., Ph.D. (Princeton)

Research interests and affiliations

Research interests
  • Organic electronics

  • Spectroscopy

  • Nanophotonics

  • Quantum Optics

Our research aims to realise advanced optoelectronic devices (LEDs, solar cells, lasers) using functional molecular and nanostructured materials.

We have undergraduate and graduate projects available for motivated students with an interest in solid-state physics, nanotechnology and photonics.

Expertise type(s) (NSERC subjects)
  • 3111 Lasers
  • 3112 Photonics
  • 3302 Electronic properties of solids
  • 3303 Surfaces, interfaces and thin films
  • 3304 Semiconductors
  • 3306 Optical properties
  • 3308 Superfluids
  • 3403 Spectroscopy
  • 3406 Photochemistry and photophysics

Publications

Recent publications
Conference paper
Patri, A., Jia, X., Mohsin, M., Kéna-Cohen, S. & Caloz, C. (2019). Compact grating coupler using asymmetric waveguide scatterers. Paper presented at the Frontiers in Optics, Washington, DC. Retrieved from https://doi.org/10.1364/FIO.2019.JW4A.80
Journal article
Hafezian, S., Beaini, R., Martinu, L. & Kena-Cohen, S. (2019). Degradation mechanism of protected ultrathin silver films and the effect of the seed layer. Applied Surface Science, 484, 335-340. Retrieved from https://doi.org/10.1016/j.apsusc.2019.04.043
Journal article
Brodeur, J., Hu, L., Malinge, A., Eizner, E., Skene, W.G. & Kena-Cohen, S. (2019). Highly Efficient and Spectrally Narrow Near-Infrared Fluorescent OLEDs Using a TADF-Sensitized Cyanine Dye. Advanced Optical Materials, 7(22), 7 pages. Retrieved from https://doi.org/10.1002/adom.201901144
Journal article
Eizner, E., Martinez-Martinez, L.A., Yuen-Zhou, J. & Kena-Cohen, S. (2019). Inverting singlet and triplet excited states using strong light-matter coupling. Science Advances, 5(12), 8 pages. Retrieved from https://doi.org/10.1126/sciadv.aax4482

Supervision at Polytechnique

COMPLETED

  • Ph.D. Thesis (2)

    • Hafezian, S. (2019). Growth Control and Study of Ultrathin Silver Films for Energy-Saving Coatings (Ph.D. Thesis, Polytechnique Montréal). Retrieved from https://publications.polymtl.ca/3925/
    • Souza Barachati, F.b. (2018). Optical Nonlinearities in the Strong Light-Matter Coupling Regime (Ph.D. Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/3717/
  • Master's Thesis (2)

    • Brodeur, J. (2018). Stratégies pour la conception de diodes électroluminescentes organiques hautement efficaces (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/3767/
    • Ibrahim, J. (2017). Couplage du séléniure de gallium bidimensionnel à des cavités plasmoniques (Master's Thesis, École Polytechnique de Montréal). Retrieved from https://publications.polymtl.ca/2907/

News about Stéphane Kéna-Cohen

NEWS | November 8, 2019
Donna Strickland, co-recipient of the Nobel Prize in Physics in 2018, meets the Polytechnique community | Read
NEWS | August 13, 2018
Projects by two Polytechnique Montréal professors receive NSERC Strategic Partnership Grants | Read
NEWS | January 23, 2018
CFI and the Government of Québec award more than $20 million to four research projects headed by Polytechnique Montréal professors | Read
NEWS | June 5, 2017
A stream of superfluid light | Read

Press review about Stéphane Kéna-Cohen

August 13, 2018, Agenparl, Des projets de deux professeurs de Polytechnique Montréal reçoivent des subventions de partenariat stratégique du CRSNG Plus de 2,1 millions de dollars seront consacrés sur trois ans à trois projets de recherche en génie physique qui sont dirigés par les professeurs Stéphane Kéna-Cohen et Oussama Moutanabbir de Polytechnique Montréal.
January 1, 2018, Québec Science, Une lumière aux propriétés exotiques Avec des collègues du Conseil national de la recherche (CNR) en Italie, Stéphane Kéna-Cohen, professeur adjoint au Département de génie physique de Polytechnique Montréal, a réussi à produire une lumière qui traverse les milieux normalement diffusants sans être diffusée.
June 17, 2017, Trust my science , Des physiciens ont réussi à créer de la « lumière liquide » à température ambiante pour la toute première fois Mention de Stéphane Kéna-Cohen, professeur adjoint au Département de génie physique de Polytechnique Montréal.