Project description DEENESFRITPL Study investigates trion formation and properties in 2D materials Coherent light sources are playing an essential role in countless everyday technologies. The increasing demand to reduce the energy consumption is pushing the laser technology toward the design of miniaturised coherent light sources operating with minimal power. In this context, full control over trion density (i.e. localised excitations consisting of three charged particles) in 2D semiconductors could enable optical amplification and lasing at unprecedented excitation levels. Funded by the Marie Skłodowska-Curie Actions program, the INTRINSIC project aims to further understand photoexcitation-based trion formation, their concentration and stability in functionalized 2D semiconductors by controlling carrier doping, defect density, and strain fields at the nanoscale level. Show the project objective Hide the project objective Objective The ability to manipulate excitonic complexes in 2D-materials is of fundamental importance for the development of excitonic based optoelectronic devices operating in low-carrier density, low-power regimes. Correlating locally variable quantities with emission properties of excitonic complexes on sub-diffraction length scale could enable on-demand control of the mutual conversion between excitons and trions. In particular, control over trion density upon photoexcitation in a functionalized 2D-material disclose the possibility to achieve trionic optical gain, that is, a condition of optical gain sustained by the difference between trion and pre-doped electron density. As a peculiarity, trionic optical gain does not require global population inversion common to optical gain mechanisms of conventional semiconductors. Therefore, trion density control could enable optical amplification and lasing at unprecedented low levels of excitation. To this end, we aim to understand the photoexcitation dependent trion formation process, their abundance and stability upon variation of local quantities such as carrier doping, defects density and strain fields in 2D-materials. To pursue this goal we will implement a structural /spectroscopic correlated approach based on hyperspectral nano-imaging and far-field cryo-microscopy of 2D monolayers transferred on a plasmonic nanopillars array with controlled levels of charge doping and strain. Demonstration of trionic optical gain in such conditions will provide the necessary requirement for achieving trionic lasing. Laser feedback will be then realized by engineering the surface lattice resonance of a plasmonic nanopillar cavity to match the trionic peak gain wavelength. Fields of science natural sciencesphysical scienceselectromagnetism and electronicssemiconductivitynatural sciencesphysical sciencesopticslaser physics Programme(s) HORIZON.1.2 - Marie Skłodowska-Curie Actions (MSCA) Main Programme Topic(s) HORIZON-MSCA-2021-PF-01-01 - MSCA Postdoctoral Fellowships 2021 Call for proposal HORIZON-MSCA-2021-PF-01 See other projects for this call Funding Scheme HORIZON-AG-UN - HORIZON Unit Grant Coordinator FONDAZIONE ISTITUTO ITALIANO DI TECNOLOGIA Net EU contribution € 265 099,20 Address Via morego 30 16163 Genova Italy See on map Region Nord-Ovest Liguria Genova Activity type Research Organisations Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window EU contribution No data Partners (1) Sort alphabetically Sort by Net EU contribution Expand all Collapse all TRUSTEES OF COLUMBIA UNIVERSITY IN THE CITY OF NEW YORK United States Net EU contribution € 0,00 Address Amsterdam avenue 1210 room 10027 7003 New york See on map Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding No data
