Julien Legendre

Chercheur postdoctoral à l'ICFO - l'Institut des Sciences Photoniques
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Publications

Phonon polaritons and their impact on energy harvesting and cooling technologies

Thomas Châtelet , Julien Legendre , Kyriaki Kontou , Wissal Sghaier , Pierre-Olivier Chapuis et al.
Thermal Polaritonics Workshop, LEE Bong Jae, Apr 2025, Daejeon, South Korea
Communication dans un congrès hal-05042794 v1

Thermal radiation at the nanoscale, electroluminescence, single and dual radiative heat engines

Julien Legendre , Thomas Châtelet , Mathieu Thomas , Olivier Merchiers , Pierre-Olivier Chapuis
14th International Conference on Metamaterials, Photonic Crystals and Plasmonics (META 2024), PIERS, Jul 2024, Toyama, Japan
Communication dans un congrès hal-04792439 v1

Near-field thermophotonic refrigeration

T. Châtelet , J. Legendre , P.-O. Chapuis , O. Merchiers
5th International Workshop on Nano-Micro Thermal Radiation (NanoRad 2024), Jul 2024, Sapporo, Japan
Communication dans un congrès hal-04803804 v1

Dual radiative heat engines: combining a TPV cell with an active emitter

Julien Legendre , Pierre-Olivier Chapuis
15th World Conference on Thermophotovoltaic Generation of Electricity (TPV-15), Oct 2024, Madrid, Spain
Communication dans un congrès hal-04803792 v1

Design of a near-field thermophotonic device in the planar configuration for energy harvesting and refrigeration

Wissal Sghaier , Julien Legendre , Luc van der Kraabe , Natasha Gruginskie , John Schermer et al.
Thermal Radiation to Electrical Energy conversion (TREE) workshop, Oct 2023, Nantes, France
Communication dans un congrès hal-04311006 v1

Thermophotonic energy harvesting: towards a narrowband LED emission?

Julien Legendre , Pierre-Olivier Chapuis
Symposium SF05: Infrared materials and devices for thermal radiation control, MRS Fall Symposium, Nov 2023, Boston, United States
Communication dans un congrès hal-04803815 v1

Comparing near-field thermal radiation of different materials including III-V semiconductors

Mathieu Thomas , Christophe Lucchesi , Julien Legendre , Natasha Gruginskie , Rodolphe Vaillon et al.
MRS Spring Meeting Symposium "Emerging Thermal Materials—From Nanoscale Heat Transport, Devices and Applications, to Theories", Apr 2023, San Francisco, United States
Communication dans un congrès hal-04310988 v1

Near-Field Radiative Enhancements — Benefits and Drawbacks for Thermophotonic Energy Harvesting

Julien Legendre , Pierre-Olivier Chapuis
MRS Spring 2023, Apr 2023, Online, France
Communication dans un congrès hal-04084792 v1

Electroluminescence overcoming thermal radiation in near field: conditions for a nanothermophotonic refrigerator

Thomas Châtelet , Julien Legendre , Olivier Merchiers , Pierre-Olivier Chapuis
Workshop on Thermal Radiation to Electrical Energy conversion, Oct 2023, Nantes, France
Communication dans un congrès hal-04311004 v1

Thermophotovoltaics vs thermophotonics: physics and performance of III-V heterostructures in the near-field

Julien Legendre , Pierre-Olivier Chapuis
14th World Conference on Thermophotovoltaic Generation, May 2023, online, France
Communication dans un congrès hal-04115996 v1

Near-field thermal radiation, thermophotovoltaics and polaritons

Christophe Lucchesi , Julien Legendre , Thomas Châtelet , Dilek Cakiroglu , Jean-Philippe Perez et al.
Thermal Polaritonics Workshop, Apr 2023, Tokyo, France
Communication dans un congrès hal-04310983 v1

Thermodynamics of AlGaAs near-field thermophotonic devices for energy harvesting and cooling purposes

Julien Legendre , Thomas Châtelet , Olivier Merchiers , Pierre-Olivier Chapuis
Photonics West 2023 - Photonic Heat Engines: Science and Applications V, Feb 2023, San Francisco, United States
Communication dans un congrès hal-03979096 v1

Near-field thermophotonic energy harvesting from heterostructure-based devices with bandgaps in the near-infrared range

Julien Legendre , Pierre-Olivier Chapuis
CMD30 - FisMat2023, Sep 2023, Milano, Italy
Communication dans un congrès hal-04232675 v1

Thermal Radiation, Electroluminescence and Heat Engines in the Near Field

Julien Legendre , Thomas Chatelet , Mathieu Thomas , Christophe Lucchesi , Olivier Merchiers et al.
Progress In Electromagnetrics Symposium (PIERS) 2023 - Focus Session «Casimir Effect and Radiative Heat Transfer», Jul 2023, Prague, Czech Republic
Communication dans un congrès hal-04310856 v1

Near-field thermal radiation vs near-field electroluminescence: conditions for a thermophotonic refrigerator,

Thomas Chatelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
MRS Spring Meeting Symposium, "Emerging Thermal Materials—From Nanoscale Heat Transport, Devices and Applications, to Theories", Apr 2023, San Francisco, United States
Communication dans un congrès hal-04310989 v1

A study of AlGaAs PIN homojunctions for near-field thermophotonic applications

Julien Legendre , Pierre-Olivier Chapuis
Photonics West 2023 - Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XII, Jan 2023, San Francisco, United States
Communication dans un congrès hal-03979072 v1

Thermophotonic energy harvesters: thermodynamic analysis and near-field performances of 1D architectures

Julien Legendre , Pierre-Olivier Chapuis
Workshop on Thermal Radiation to Electrical Energy conversion, Oct 2023, Nantes, France
Communication dans un congrès hal-04238299 v1

Controlling near-field thermal energy for conversion devices and sensing

Christophe Lucchesi , Julien Legendre , Khac-Long Nguyen , Ahmed Alwakil , Dilek Cakiroglu et al.
Program on Emerging Regimes and Implications of Quantum and Thermal Fluctuational Electrodynamics (Flectro2022), Kavli Institute of Theoretical Physics (KITP), Jul 2022, UC Santa Barbara, United States. ⟨10.26081/K6R93X⟩
Communication dans un congrès hal-03813941 v1

A Study of AlGaAs-Based Near-Field Thermophotonic Devices

Julien Legendre , Pierre-Olivier Chapuis
Nanoscale and Microscale Heat Transfer VII, May 2022, Palermo, Italy
Communication dans un congrès hal-03710909 v1

Near-field thermophotonic devices with AlGaAs emitters and cells

Julien Legendre , Pierre-Olivier Chapuis
13rd World Conference on Thermophotovoltaic Generation of Electricity, Apr 2022, Miyazaki (remote), Japan
Communication dans un congrès hal-03653400 v1

Near-field thermophotonics: extending near-field thermophotovoltaics with LEDs as emitters

Julien Legendre , Pierre-Olivier Chapuis
Workshop on Thermal Radiation to Electrical Energy conversion, Nov 2022, Noisy-le-Grand, France
Communication dans un congrès hal-03858069 v1

Temperature dependence of thermal radiation and impact on near-field thermophotovoltaic devices

Christophe Lucchesi , Julien Legendre , Rodolphe Vaillon , Pierre-Olivier Chapuis
13th Conference on Thermophotovoltaic Generation of Electricity (TPV-13), Apr 2022, Miyazaki & online (hybrid), Japan
Communication dans un congrès hal-03673063 v1

Near-field radiative heat transfer in thermophotovoltaics and thermophotonics

Christophe Lucchesi , Julien Legendre , Pierre-Olivier Chapuis , Mathieu Thomas , Maud Piqueras et al.
745th WE-Heraeus-Seminar “Photon, Phonon, and Electron Transitions in Coupled Nanoscale Systems”, Sep 2022, Bad Honnef, Germany
Communication dans un congrès hal-03862809 v1

Impact of non-radiative losses in AlGaAs PIN junctions for near-field thermophotonic energy harvesting

Julien Legendre , Pierre-Olivier Chapuis
Journées Plénières du Groupe de Recherche NAME (NAnoMaterials for Energy applications), Oct 2022, Villeurbanne, France
Communication dans un congrès hal-03817423 v1

Solid-state/optical alternatives to thermoelectricity for thermal-to-electrical energy conversion

Christophe Lucchesi , Julien Legendre , Dilek Cakiroglu , Jean-Philippe Perez , Thierry Taliercio et al.
18th European Conference on Thermoelectrics (ECT), Oct 2022, Barcelona, Spain
Communication dans un congrès hal-03813779 v1

A numerical study of near-field thermophotonic devices including local emission and absorption distributions

Julien Legendre , Pierre-Olivier Chapuis
MRS Spring meeting, Symposium "Advanced functional, linear/nonlinear and quantum materials for metasurfaces, metamaterials and nanophotonics, Apr 2021, Seattle (remote), France
Communication dans un congrès hal-03649747 v1

A numerical study of near-field thermophotonic devices including local emission and absorption distribution

Julien Legendre , Pierre-Olivier Chapuis
E-MRS Spring meeting, symposium 'Advances in thermophotovoltaic devices, devices and systems', May 2021, Strasbourg (remote), France
Communication dans un congrès hal-03649746 v1

A radiative thermal device for refrigeration: the near-field thermophonic cooler

Thomas Châtelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
15th World Conference on Thermophotovoltaic Generation of Electricity (TPV-15), Oct 2024, Madrid, Spain
Poster de conférence hal-04803789 v1

Operating conditions and thermodynamic bounds of dual radiative heat engines

Julien Legendre , Pierre-Olivier Chapuis
Sadi-Carnot's legacy - Celebrating the 200th anniversary of thermodynamics, Sep 2024, Palaiseau, France
Poster de conférence hal-04803819 v1

Impact of roughness on the energy harvesting in thermophotonic devices

Thomas Châtelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
14th Conference on Thermophotovoltaic Generation of Electricity (TPV-14), May 2023, online (organized by Univ. Michigan), United States
Poster de conférence hal-04310990 v1

Near-field thermophonics: a numerical study of AlGaAs-GaAs devices

Julien Legendre , Pierre-Olivier Chapuis
1st summer school on the modeling of nanomaterials for energy transport and storage (MONACOSTE), May 2022, Fréjus, France
Poster de conférence hal-03669323 v1

Near-field thermophotonic refrigerator: a numerical study

Thomas Châtelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
Journées de la Matière Condensée (JMC) 2022, Aug 2022, Villeurbanne, France
Poster de conférence hal-03863689 v1

Photonic heat pumps instead of heat engines: the near-field thermophotonic refrigerator

Thomas Châtelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
Workshop on Thermal Radiation to electrical Energy conversion (TREE), Nov 2022, Champ-sur-Marne, France
Poster de conférence hal-03863588 v1

Near-field thermophotonics: a numerical study of AlGaAs-GaAs devices

Julien Legendre , Pierre-Olivier Chapuis
Journées de la Matière Condensée (JMC) 2022, Aug 2022, Lyon, France
Poster de conférence hal-03780123 v1

Near-field thermophonics: a numerical study of AlGaAs-GaAs devices

Julien Legendre , Pierre-Olivier Chapuis
3rd Photovoltaic School (PVSchool 2022), Apr 2022, Les Houches, France
Poster de conférence hal-03649753 v1

Near-field thermophotonic refrigerator: a numerical study

Thomas Chatelet , Julien Legendre , Pierre-Olivier Chapuis , Olivier Merchiers
Journées plénières du GDR Nanomaterials for Energy, Oct 2022, Villeurbanne, France
Poster de conférence hal-03863637 v1

Near-field thermophotonic devices with AlGaAs emitters and cells

Julien Legendre , Pierre-Olivier Chapuis
MRS Fall meeting, Nov 2021, Boston, United States
Poster de conférence hal-03649745 v1

A numerical study of near-field thermophotonic devices

Julien Legendre , Pierre-Olivier Chapuis
2nd summer school on Photothermal effects in Plasmonics (PEP), Oct 2021, Porquerolles, France
Poster de conférence hal-03649754 v1