Search Results - "Kéna‐Cohen, Stéphane"

Bose-Einstein Condensation of Exciton-Polaritons in Organic Microcavities by Keeling, Jonathan, Kéna-Cohen, Stéphane

“…Bose-Einstein condensation describes the macroscopic occupation of a single-particle mode: the condensate. This state can in principle be realized for any…”
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Polariton-Assisted Singlet Fission in Acene Aggregates by Martínez-Martínez, Luis A, Du, Matthew, F. Ribeiro, Raphael, Kéna-Cohen, Stéphane, Yuen-Zhou, Joel

“…Singlet fission is an important candidate to increase energy conversion efficiency in organic photovoltaics by providing a pathway to increase the quantum…”
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Mid-infrared Polarized Emission from Black Phosphorus Light-Emitting Diodes by Wang, Junjia, Rousseau, Adrien, Yang, Mei, Low, Tony, Francoeur, Sébastien, Kéna-Cohen, Stéphane

“…We demonstrate a mid-infrared light-emitting diode based on the 2D semiconductor black phosphorus (BP). The device is composed of a mechanically exfoliated…”
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Efficient Solution‐Processed Hyperfluorescent OLEDs with Spectrally Narrow Emission at 840 nm by Shahalizad, Afshin, Malinge, Alexandre, Hu, Lei, Laflamme, Grégory, Haeberlé, Louis, Myers, David M., Mao, Jian, Skene, William G., Kéna‐Cohen, Stéphane

“…To reduce cost and improve environmental sustainability, there continues to be an important need for the development of efficient organic light‐emitting diodes…”
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Strong light–matter coupling in two-dimensional atomic crystals by Liu, Xiaoze, Galfsky, Tal, Sun, Zheng, Xia, Fengnian, Lin, Erh-chen, Lee, Yi-Hsien, Kéna-Cohen, Stéphane, Menon, Vinod M.

“…Two-dimensional atomic crystals of graphene, as well as transition-metal dichalcogenides, have emerged as a class of materials that demonstrate strong…”
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Heavy Atom Effect in Halogenated mCP and Its Influence on the Efficiency of the Thermally Activated Delayed Fluorescence of Dopant Molecules by Malinge, Alexandre, Kumar, Shiv, Chen, Dongyang, Zysman-Colman, Eli, Kéna-Cohen, Stéphane

“…In this study, we explore the impact of halogen functionalization on the photophysical properties of the commonly used organic light-emitting diode (OLED) host…”
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Ultrastrongly Coupled Exciton–Polaritons in Metal‐Clad Organic Semiconductor Microcavities by Kéna‐Cohen, Stéphane, Maier, Stefan A., Bradley, Donal D. C.

“…Ultrastrong exciton–photon coupling of Frenkel molecular excitons is demonstrated at room temperature in a metal‐clad microcavity containing a thin film of…”
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Optical and Structural Properties of Ultra‐thin Gold Films by Kossoy, Anna, Merk, Virginia, Simakov, Denis, Leosson, Kristjan, Kéna‐Cohen, Stéphane, Maier, Stefan A.

“…Realizing laterally continuous ultra‐thin gold films on transparent substrates is a challenge of significant technological importance. In the present work,…”
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Enhanced nonlinear interaction of polaritons via excitonic Rydberg states in monolayer WSe2 by Gu, Jie, Walther, Valentin, Waldecker, Lutz, Rhodes, Daniel, Raja, Archana, Hone, James C., Heinz, Tony F., Kéna-Cohen, Stéphane, Pohl, Thomas, Menon, Vinod M.

“…Strong optical nonlinearities play a central role in realizing quantum photonic technologies. Exciton-polaritons, which result from the hybridization of…”
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Tunable Third-Harmonic Generation from Polaritons in the Ultrastrong Coupling Regime by Barachati, Fábio, Simon, Janos, Getmanenko, Yulia A., Barlow, Stephen, Marder, Seth R., Kéna-Cohen, Stéphane

“…Strong interparticle interactions between polaritons have traditionally stemmed from their exciton component. In this work, we impart a strong third-order…”
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Room-temperature polariton quantum fluids in halide perovskites by Peng, Kai, Tao, Renjie, Haeberlé, Louis, Li, Quanwei, Jin, Dafei, Fleming, Graham R., Kéna-Cohen, Stéphane, Zhang, Xiang, Bao, Wei

“…Quantum fluids exhibit quantum mechanical effects at the macroscopic level, which contrast strongly with classical fluids. Gain-dissipative solid-state…”
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Population of Subradiant States in Carbon Nanotube Microcavities in the Ultrastrong Light–Matter Coupling Regime by Allen, Ryan T., Dhavamani, Abitha, Son, Minjung, Kéna-Cohen, Stéphane, Zanni, Martin T., Arnold, Michael S.

“…Strong light–matter coupling results in eigenstates called polaritons which share the properties of both light and matter and provide a useful way to engineer…”
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Directional Light Emission from Layered Metal Halide Perovskite Crystals by Walters, Grant, Haeberlé, Louis, Quintero-Bermudez, Rafael, Brodeur, Julien, Kéna-Cohen, Stéphane, Sargent, Edward H

“…Metal halide perovskites are being increasingly explored for use in light-emitting diodes (LEDs), with achievements in efficiency and brightness charted across…”
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Inverting singlet and triplet excited states using strong light-matter coupling by Eizner, Elad, Martínez-Martínez, Luis A, Yuen-Zhou, Joel, Kéna-Cohen, Stéphane

“…In organic microcavities, hybrid light-matter states can form with energies that differ from the bare molecular excitation energies by nearly 1 eV. A timely…”
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Quantum Statistics of Surface Plasmon Polaritons in Metallic Stripe Waveguides by Di Martino, Giuliana, Sonnefraud, Yannick, Kéna-Cohen, Stéphane, Tame, Mark, Özdemir, Şahin K, Kim, M. S, Maier, Stefan A

“…Heralded single surface plasmon polaritons are excited using photons generated via spontaneous parametric down conversion. The mean excitation rates, intensity…”
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Role of Photon Recycling and Band Filling in Halide Perovskite Photoluminescence under Focussed Excitation Conditions by Sridharan, Aravindan, Noel, Nakita K, Rand, Barry P, Kéna-Cohen, Stéphane

“…We study the temporal, spatial, and spectral evolution of charge carriers in hybrid perovskite thin films after optical excitation with a small laser spot…”
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Polariton Chemistry: Action in the Dark by Kéna-Cohen, Stéphane, Yuen-Zhou, Joel

“…Controlling chemical reactivity using vibrational strong coupling…”
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Low‐Threshold Exciton‐Polariton Condensation via Fast Polariton Relaxation in Organic Microcavities by Ishii, Tomohiro, Miyata, Kiyoshi, Mamada, Masashi, Bencheikh, Fatima, Mathevet, Fabrice, Onda, Ken, Kéna‐Cohen, Stéphane, Adachi, Chihaya

“…In organic microcavities, a macroscopic condensate of exciton‐polaritons can be formed at high‐exciton polariton densities. The threshold for forming this…”
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Low-voltage polariton electroluminescence from an ultrastrongly coupled organic light-emitting diode by Gubbin, Christopher R., Maier, Stefan A., Kéna-Cohen, Stéphane

“…We demonstrate electroluminescence from Frenkel molecular excitons ultrastrongly coupled to photons of a metal-clad microcavity containing a…”
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Confined Surface Plasmon–Polariton Amplifiers by Kéna-Cohen, Stéphane, Stavrinou, Paul N, Bradley, Donal D. C, Maier, Stefan A

“…We demonstrate the realization of confined surface plasmon polariton amplifiers using a thin layer of the organic gain medium…”
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