Sub‐bandgap activated charges transfer in a graphene‐MoS2‐graphene heterostructure

Autor: Sunil Kumar, Arvind Singh, Anand Nivedan, Sandeep Kumar, Seok Joon Yun, Young Hee Lee, Marc Tondusson, Jérôme Degert, Jean Oberle, Eric Freysz

Publikováno v: Nano Select, Vol 2, Iss 10, Pp 2019-2028 (2021)

Abstract Monolayers of transition metal dichalcogenides are semiconducting materials which offer many prospects in optoelectronics. A monolayer of molybdenum disulfide (MoS2) has a direct bandgap of 1.88 eV. Hence, when excited with optical photon en

Externí odkaz: https://doaj.org/article/b2a2bdb9c7a74cadacc53caa16c732a0

Enhancement in optically induced ultrafast THz response of MoSe

Autor: Sunil, Kumar, Arvind, Singh, Sandeep, Kumar, Anand, Nivedan, Marc, Tondusson, Jérôme, Degert, Jean, Oberlé, Seok Joon, Yun, Young Hee, Lee, Eric, Freysz

Publikováno v: Optics express. 29(3)

THz conductivity of large area MoS

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::1ca0ac303156741ae27094028e959681
https://pubmed.ncbi.nlm.nih.gov/33771003

Influence of photo-excited charge carriers in silicon wafer in a two-color laser-induced air plasma terahertz emission

Autor: Esben Skovsen, Christian B. Sorensen, Jérôme Degert, C. Lacroix, Emmanuel Abraham, Marc Tondusson, Eric Freysz, A. Minasyan, Leo Guiramand

Publikováno v: Sorensen, C B, Guiramand, L, Minasyan, A, Lacroix, C, Degert, J, Tondusson, M, Skovsen, E, Freysz, E & Abraham, E 2020, Influence of photo-excited charge carriers in silicon wafer in a two-color laser-induced air plasma terahertz emission . in 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020 ., 9370560, IEEE, International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz, vol. 2020-November, pp. 67-68, 45th International Conference on Infrared, Millimeter, and Terahertz Waves, IRMMW-THz 2020, Virtual, Buffalo, United States, 08/11/2020 . https://doi.org/10.1109/IRMMW-THz46771.2020.9370560

We demonstrate that the far-field terahertz beam generated from a Ti:Sapphire two-color laser-induced filament can exhibit a conical or a Gaussian distribution depending on the filtering experimental conditions. Using a 2D electro-optic detection, we

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7417d0b02d5b0e7e36ba1822a28204dc
https://vbn.aau.dk/da/publications/40890406-99e0-4e87-9bfd-56c7368f20f0

Enhanced transient THz response in TMDC heterostructures

Autor: Jean Oberle, Sandeep Kumar, Marc Tondusson, Jérôme Degert, Arvind Singh, Anand Nivedan, Eric Freysz, Seok Joon Yun, Young Hee Lee

Publikováno v: 2020 45th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz).

The THz conductivity of MoS 2 , MoSe 2 monolayers and their heterostructure is compared and reported here. We also measured the hot carrier relaxation upon optical excitation in these samples below and above the bandgap of the monolayers. While in th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f974151923191f1ffe84fcb0c3d5068b
https://doi.org/10.1109/irmmw-thz46771.2020.9370975

Impact of Spin State Transition on Vibrations of [Fe–(PM–BiA) 2 (NCS) 2 ] and [Fe–(PM–PEA) 2 (NCS) 2 ] Spin Crossover Compounds: Experimental and Theoretical Far IR and Raman Study

Autor: Samir F. Matar, Jérôme Degert, Jean François Létard, François Guillaume, Eric Freysz, Benjamin Viquerat, Amine Ould-Hamouda

Publikováno v: European Journal of Inorganic Chemistry. 2018:385-393

Far IR and Raman spectroscopy of [Fe–(PM-BiA)2 (NCS)2] and [Fe –(PM-PEA)2 (NCS)2] are performed to record the vibration modes of these complexes and their evolutions during spin state transition. THz spectroscopy is used to measure the far IR abs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::be0f84a72ced427721015edddde9f248
https://doi.org/10.1002/ejic.201700979