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3 results on '"Khalili, Adrien"'

1. Broadband enhancement of mid-wave infrared absorption in a multi resonant nanocrystal-based device

Author

Dang, Tung Huu, Abadie, Claire, Khalili, Adrien, Gréboval, Charlie, Zhang, Huichen, Prado, Yoann, Xu, Xiang Zhen, Gacemi, Djamal, Descamps‐Mandine, Armel, Ithurria, Sandrine, Todorov, Yanko, Sirtori, Carlo, Vasanelli, Angela, Lhuillier, Emmanuel, Laboratoire de physique de l'ENS - ENS Paris (LPENS), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité)-Département de Physique de l'ENS-PSL, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), DOTA, ONERA, Université Paris Saclay [Palaiseau], ONERA-Université Paris-Saclay, Physico-chimie et dynamique des surfaces (INSP-E6), Institut des Nanosciences de Paris (INSP), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Nanostructures et optique (INSP-E4), Laboratoire de Physique et d'Etude des Matériaux (UMR 8213) (LPEM), Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre de microcaractérisation Raimond Castaing (Centre Castaing), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT), ANR-19-CE24-0022,COPIN,Détecteur plasmonique à nanoCristaux colloïdaux: une nouvelle filière pour l'OPtoélectronique INfrarouge(2019), ANR-19-CE09-0017,FRONTAL,Nanocristaux Colloïdaux Dopés Infrarouges(2019), ANR-21-CE24-0012,BRIGHT,Diode électroluminescente infrarouge brillante par exaltation du couplage lumière-matière(2021), ANR-21-CE09-0029,MixDFerro,Heterostructures à dimensions mixtes sous contrôle ferroélectrique 2D(2021), ANR-19-CE09-0026,GRaSkop,Tuning Giant Rashba Spin-Orbit Coupling in Polar Single Layer Transition Metal Dichalcogenides(2019), ANR-10-LABX-0067,MATISSE,MATerials, InterfaceS, Surfaces, Environment(2010), ANR-18-CE30-0023,IPER-Nano2,Nanocristaux de perovskite inorganique pour la nanophotonique(2018), ANR-20-ASTR-0008,NITquantum,Design et fabrication d'un plan focal dans le proche infrarouge à base de nanocrisrtaux(2020), and European Project: 756225,blackQD

Subjects
photodetection, [PHYS.PHYS.PHYS-OPTICS]Physics [physics]/Physics [physics]/Optics [physics.optics], NANOCRISTAL, infrared sensor, resonances, cavities, ABSORPTION INFRAROUGE, [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci], surface plasmon mode, PLASMON, Atomic and Molecular Physics, and Optics, DETECTEUR INFRAROUGE, Electronic, Optical and Magnetic Materials
Abstract

International audience; Light management is one of the main challenges to address when designing a sensor from a nanocrystal (NC) array. Indeed, the carrier diffusion length, limited by hopping mechanism, is much shorter than the absorption depth. Several types of resonators (plasmon, Bragg mirror, guided mode, Fabry-Perot cavity) have been proposed to reduce the volume where light is absorbed. All of them are inherently narrow bands, while imaging applications focus on broadband sensing. Here, we propose an infrared sensor in the short and mid-wave infrared (SWIR and MWIR) that combines three different photonic modes to achieve broadband enhancement of the light absorption. Moreover, we show that these three modes can be obtained from a simple structure where the NC film is coupled only to a grating and a top metallic layer. The obtained device achieves a high responsivity of >700 mA.W-1 , a detectivity up to 2x10 10 Jones at 80 K, and a short response time of 11 µs.

Published
2022

2. Broadband Enhancement of Mid-Wave Infrared Absorption in a Multi-Resonant Nanocrystal-Based Device.

Author

Tung Huu Dang, Abadie, Claire, Khalili, Adrien, Gréboval, Charlie, Huichen Zhang, Prado, Yoann, Xiang Zhen Xu, Gacemi, Djamal, Descamps-Mandine, Armel, Ithurria, Sandrine, Todorov, Yanko, Sirtori, Carlo, Vasanelli, Angela, and Lhuillier, Emmanuel

Abstract

Light management is one of the main challenges to address when designing a sensor from a nanocrystal (NC) array. Indeed, the carrier diffusion length, limited by hopping mechanism, is much shorter than the absorption depth. Several types of resonators (plasmon, Bragg mirror, guided mode, Fabry-Perot cavity) have been proposed to reduce the volume where light is absorbed. All of them are inherently narrow bands, while imaging applications focus on broadband sensing. Here, an infrared sensor in the short and mid-wave infrared (SWIR and MWIR) that combines three different photonic modes is proposed to achieve broadband enhancement of the light absorption. Moreover, it is shown that these three modes can be obtained from a simple structure where the NC film is coupled only to a grating and a top metallic layer. The obtained device achieves a high responsivity of >700 mA W-1, a detectivity up to 2 × 1010 Jones at 80 K, and a short response time of 11 µs. [ABSTRACT FROM AUTHOR]

Published
2022
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3. Complex Optical Index of HgTe Nanocrystal Infrared Thin Films and Its Use for Short Wave Infrared Photodiode Design.

Author

Rastogi, Prachi, Chu, Audrey, Dang, Tung Huu, Prado, Yoann, Gréboval, Charlie, Qu, Junling, Dabard, Corentin, Khalili, Adrien, Dandeu, Erwan, Fix, Baptiste, Xu, Xiang Zhen, Ithurria, Sandrine, Vincent, Gregory, Gallas, Bruno, and Lhuillier, Emmanuel

Subjects
THIN films, CHARGE carrier lifetime, NANOCRYSTALS, SHORT films, ELECTROMAGNETIC devices, ELLIPSOMETRY
Abstract

The limited investigation of the optical properties of HgTe nanocrystal (NC) thin films has become a bottleneck for the electromagnetic design of devices. Using broadband ellipsometry, the refractive index (n) and the extinction coefficient (k) are determined for a series of HgTe NC films relevant to infrared sensing applications. Electromagnetic simulations reveal that the n value of HgTe NC thin films can conveniently be approximated by its mean spectral value n = 2.35 ± 0.15. This complex optical index is then used to design a diode with i) a reduced amount of Hg containing material (thin film < 150 nm) and ii) a thickness of the device better‐matched with the carrier diffusion length. It is demonstrated that introducing an aluminum grating onto the transparent conductive electrode leads to an enhanced absorption while reinforcing the work‐function difference between the two electrodes. Broadband (≈1 µm), non‐polarized, and strong absorption up to 100% is designed. This leads to a responsivity of 0.2 A W−1 and a detectivity of 2 × 1010 Jones for 2 µm cut‐off wavelength at room‐temperature, while the time response is as short as 110 ns. [ABSTRACT FROM AUTHOR]

Published
2021
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