Realization of electrically pumped hybrid perovskites based light-emitting devices, such as electroluminescent diodes (LED) and laser diodes (LD) in the framework of the Visible Light Communication (VLC).
The aim of the consortium is to realize electrically pumped hybrid perovskites based light-emitting devices, such as electroluminescent diodes (LED) and laser diodes (LD). The project proposes a complete study since the fundamental properties of the material in a view of its optimization for the laser effect until the performance characterizations of the devices in a transmission line. The framework of this project is related to applications such as the Visible Light Communication (VLC).
The achievement of the devices relies on the skills of three complementary teams: a specialist of hybrid perovskites, a specialist of nanophotonics for light emission, and a third multidisciplinary entity, specialist of organic semiconductors and more recently hybrid perovskites based optoelectronic devices, specialist of VLC and of propagation modeling, specialist of thermal modelling.
• Pure phase 2D Ruddlesden-Popper single crystals: n = 1, 2, 3, 4 were synthesized and a study of the excitonic recombination dynamics at room temperature as a function of the excitation power was carried out. At low power, the dynamics is dominated by the recombination of the excitons on the defects. At high power, we have shown that once the defects are saturated, below the Mott transition, the dynamics is dominated by the exciton-exciton annihilation.
• Metasurfaces based on a two-dimensional subwavelength network of 2D perovskite pillars emitting in the green, showing strong coupling at room temperature have been performed. The engineering of the photonic Bloch mode to which the perovskite is coupled allows to tune the polariton dispersion relation (linear, parabolic, multi-valley dispersion).
• A vertical microcavity containing a MAPB spin-coated layer, working in the strong coupling regime at room temperature, has been realized.
Realize electrically pumped hybrid perovskites based light-emitting devices, such as electroluminescent diodes (LED) and laser diodes (LD).
• G. Delport, G. Chehade, F. Lédée, H. Diab, C. Milesi-Brault, G. Trippé-Allard, J. Even, J.S. Lauret, E. Deleporte, D. Garrot. Exciton recombination and annihilation in pure phase phenylethylammonium-based multilayered Ruddlesden-Popper halide perovskites. JPCL 2019, 10, 5153-5159. doi.org/10.1021/acs.jpclett.9b01595
• Paul Bouteyre, Hai Son Nguyen, Jean-Sébastien Lauret, Gaëlle Trippé-Allard, Géraud Delport, Ferdinand Lédée, Hiba Diab, Ali Belarouci, Christian Seassal, Damien Garrot, Fabien Bretenaker, and Emmanuelle Deleporte, «Room-Temperature Cavity Polaritons with 3D Hybrid Perovskite: Toward Large-Surface Polaritonic Devices«, ACS Photonics 2019 6 (7), 1804-1811. 10.1021/acsphotonics.9b00625
• Nguyen Ha My Dang, D. Gerace, E. Drouard, G. Trippé-Allard, F. Lédée, R. Mazurczyk, E. Deleporte, C. Seassal, Hai Son Nguyen. « Tailoring dispersion of room temperature exciton-polaritons with perovskite-based subwavelength metasurfaces ». Nano Lett. 2020, 20, 3, 2113-2119. ttps://doi.org/10.1021/acs.nanolett.0c00125
Our society is based on communication technologies. Since the last decade, wireless communications have seen the development of systems based on visible light. For the moment, Visible Light Communication (VLC) sources are based on inorganic GaN Light-Emitting Diodes (LEDs), which exhibit a suitable lifetime for fast modulations but remain more expensive than a classical incandescence lighting. Other negative points are the cold light sensation related to the nature of the GaN LEDs and the scarcity of Ga and In atoms. Therefore, there is a need for low cost and large area technologies for VLC applications. While Organic LEDs (OLEDs) have been evaluated for this application, their limited charge transport properties force their use over small device area, which is not compatible with lighting. The EMIPERO project aims at exploiting Hybrid Organic Perovskite (HOP) materials to demonstrate a relevant technology for light emission, especially suited for VLC applications.To shift from organic emitters towards HOPs is thought to be an effective strategy towards fast modulation speeds or towards emission over larger area, thanks to the high and balanced charge carrier mobilities (10 cm²/V.s for the holes and electrons). HOP materials are relevant candidates for integrated solid-state light emitting devices such as LEDs or microlasers for several reasons. They present strong radiative recombination processes which are associated with only few contributions from non-radiative decays. Bandgap engineering of HOP materials is achievable from simple strategies from solutions, in particular the green range can be easily reached thanks to the chemical flexibility of HOPs. Finally, HOPs are grown by low temperature solution processed methods, compatible with the processes used to realize LEDs and laser diodes (LDs) on a large-scale, on top of a cheap support, possibly integrated in silicon devices. All the HOP based laser devices presented in the literature up to now are optically pumped. Electrically pumped lasing is still an important challenge to complete. The combination of the excellent optical properties of the HOP materials with suitable laser designs and high quality electrical contacts remains then to be demonstrated in order to achieve electrically-driven laser.
The EMIPERO project aims at exploiting HOP materials to demonstrate a relevant technology for light emission, especially suited for VLC applications. To this end, both HOP based LEDs and µ-lasers are proposed and the principal objective of EMIPERO project is to realize electrically driven HOP based light-emitting devices. The project proposes a complete study since the fundamental properties of the material in a view of its optimization for the laser effect until the performance characterizations of the devices in a transmission line. While HOP monocrystalline thin films will be used to explore the intrinsic properties of the hybrid perovskites and while reference perovskite based LED (PeLED) devices will be used to explore various VLC scenarios, HOP light emitting devices based on photonic nanostructures are proposed as a powerful technology for the control of the emission properties of the devices. The obtaining of electrically pumped lasing will benefit from the studies realized on PeLED. The problem of the stability of HOPs is addressed by using the most stable HOPs : the Ruddelsden-Popper hybrid perovskites.
The achievement of the devices relies on the skills of three complementary teams : a specialist of HOP materials (LAC), a specialist of nanophotonics for light emission (INL), and a specialist of organic semiconductors and more recently hybrid perovskites based optoelectronic devices (XLIM).
Madame Emmanuelle Deleporte (Laboratoire Lumière, Matière et Interfaces)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
INL-CNRS INSTITUT DES NANOTECHNOLOGIES DE LYON
LUMIN Laboratoire Lumière, Matière et Interfaces
Help of the ANR 524,303 euros
Beginning and duration of the scientific project: September 2018 - 42 Months