GDR HPero

Projet TRIUMPH : Triple junction solar modules based on perovskites and silicon for high performance, low-cost and small environmental footprint

• Type de projet : Horizon Europe
• Coordination : Hariharsudan Sivaramakrishnan Radhakrishnan, IMEC, Hariharsudan.Sivaramakrishnan imec.be
• Partenaires : INTERUNIVERSITAIR MICRO-ELECTRONICA CENTRUM (IMEC), FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V., INSTITUT PHOTOVOLTAIQUE D’ILE DE FRANCE (IPVF), ELECTRICITE DE FRANCE, NEDERLANDSE ORGANISATIE VOOR TOEGEPAST NATUURWETENSCHAPPELIJK ONDERZOEK TNO, SALD B.V., DYENAMO AB, CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE, CNRS, ALBERT-LUDWIGS-UNIVERSITAET FREIBURG, HANWHA Q.CELLS GMBH, RENA Technologies GmbH, ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE, CSEM CENTRE SUISSE D’ELECTRONIQUE ET DE MICROTECHNIQUE SA - RECHERCHE ET DEVELOPPEMENT, VON ARDENNE GMBH

• Date de commencement et durée : 01/10/2022, 42 mois
• Résumé : The TRIUMPH project aims to initiate the development of a future PV cell technology node, based on an advanced triple junction cell concept, that is widely considered to be the next technology node to come after tandems. Presently, there is considerable amount of attention and research and development (R&D) activities devoted to Pk/Si tandems and already promising cell efficiencies, reliability and outdoor performance results have been obtained. The highest efficiency reported for a 2-terminal (2T) Pk/Si tandem is 29.8%, which has already gone past the Auger limit of Si. Therefore, in TRIUMPH, we plan to venture a step further than tandems by targeting TRIple junction devices, that can add the extra “OOMPH” (hence the name TRIUMPH) needed to reach efficiencies even >33%. These 2T triple junction devices will be based on perovskites for the middle and top cells and silicon for the bottom cell and will build on the knowledge garnered in the field of Pk/Si tandems. Additionally, cost-effective processing techniques that are industrially viable will be selected for scale-up developments, with minimal upscaling performance loss and degradation during reliability testing and outdoor monitoring. As we enter the tera-watt (TW) era of PV deployment, using earth-abundant materials and enforcing circularity become necessities. Towards this objective, we not only explore options that reduce critical raw materials (CRM) such as silver (Ag) and indium (In) in the triple junction devices, but also apply design for recycling principles to the triple junction modules. The consortium consists of 14 complementary partners from both research institutions and industry, each bringing their best forte to the table, which will help to establish the pathway and the value chain for future multi-junction modules. In this way, TRIUMPH would help the European Union (EU) to maintain its technological leadership in the PV domain for the future generation of PV technologies.

Projet MARS : Méthodes de Résonance magnétique pour les nouveaux matériaux solaires

• Type de projet : Collaboration bilatérale ANR/DFG
• Coordination : A. Chepelianskii (LPS), alexei.chepelianskii universite-paris-saclay.fr
• Partenaire : GEMAC, Institut Néel, Freie Universität Berlin, University of Bayreuth
• Date de commencement et durée : 2020-2022
• Résumé : In this project we will explore the use of broadband optically detected magnetic resonance (ODMR) spectroscopy as a powerful method to establish the microscopic nature of bi-exciton states with total spin S = 2 (quintets) formed through singlet fission. Recent experiments in LPS show that this approach allows to characterise unambiguously the molecular sites occupied by bound triplets exciton pairs. These experiments will be complemented by dielectric spectroscopy (at LPS) and pulsed magnetic resonance experiments by the Berlin partner. The combination of these techniques will characterise the microscopic positions of bound triplets in bi-exciton states, the strength of their interaction, characterised by their exchange energy, as well as their fluorescence spectrum and kinetic properties. NEEL will push the limits of the ODMR experiment to single geminate triplet-pair detection in order to observe effects obscured in ensemble measurements. The inherently high optical resolution of this technique will allow to measure the fine and ultimately the hyperfine structure parameters of the excited triplet-pair. This will provie precise information on the local molecular arrangement of the bi-exciton wavefunction. The detailed physical picture emerging from these experiments will serve as the basis for a quantitative molecular-level characterisation of the electronic structure parameters of bi-exciton states which will be developed in Bayreuth. The Bayreuth team will also perform spectroscopic experiments in order to probe the role of bi-excitons in triplet-triplet anhilation processes and optical up-conversion that are important for applications. The materials relevant for solar cell and up-conversion will probably have a complex morphology which cannot be probed in macroscopic experiments on single crystals. LPS and GEMaC will thus develop a microfluorscence based ODMR experiment. This development will also allow to probe spin-properties of Methylammonium lead halide (MAPI), a promising solar cell material, in the almost unexplored limit of chemical vapour deposition grown monolayers and few layer single crystal flakes of micrometer sizes. These samples, that have already been prepared at GEMaC/LPS, allow the creation of completely new structures based on Van-der-Waals heterojunctions and their properties are more easily tunable with gate voltages compared to bulk systems. Due to these advantages the exploration of spin dependent optical properties in MAPI-nanosheets is a very promising research direction on which the GEMaC team will concentrate. Therewithal, the MARS project will develop original spin sensitive methods to probe the properties of new photo-excited states that appear in exciton fission systems and novel materials like MAPI nanosheets with broad impact for fundamental optoelectronics and its applications.

Projet DESCOPE-NANO : Durable and Efficient Solar Cells COmbining PErovskite and NANOcrystals

• Type de projet : UNITA
• Coordination : LEPMI – Lionel Flandin
• Partenaire : UNIZAR – Zaragosa University – Maria Bernechea Navarro
• Date de commencement et durée :
• Résumé : The main goal of the project is to assemble a solar cell device containing two types of light harvester materials namely, a hybrid halide perovskite and AgBiS2 nanocrystals (NCs), to obtain an extended to infrared light absorption solar cell device with improved performance. The stability of the device together with working and degradation mechanisms will be studied in detail to design ways to optimise devices, formulation, processing and post-processing. Synthesis of active materials, assembly and solar cell efficiency will be mainly performed at UNIZAR while modelling and degradation studies will be performed at USMB.

Projet UNIQUE : Carbon Based Perovskite Solar Cells with UNI-Directional Electron Bulk Transport : in the QUEst of a Short Time to Market

• Type de projet : SOlar ERA-NET
• Coordination : ISE Fraunhofer – Lukas Wagner
• Partenaire : Solaronix, EPFL, UNITOV, SPECIFIC, CEA, UAM, Dynamo
• Date de commencement et durée : 2019-2022
• Résumé : Unique European know-how and industrial involvement is combined here to realize high-efficient large area perovskite devices with long lifetimes for a truly commercially viable perovskite photovoltaic technology. Sustainable, industrial-relevant processes and low-cost materials are implemented to aim at a competitive new-generation of photovoltaics. Short energy- and CO2-payback times and a low CO2 emission factor are key factors accounted for in this project. Printable solution-processed inorganic porous metal oxides with carbon/graphite counter-electrodes, functionalized interfacial passivating layers and high quality perovskite crystals will compose the enhanced cell architecture to achieve a uni-directional charge transport. The outcome of this approach is the achievement of high open circuit voltages heading to the theoretical limit of 1.3 V and small-area cell efficiencies larger than 23% with fully up-scalable materials and processes. The decisive target is to develop carbon perovskite modules with an efficiency of 17% on 30x30 cm2 total area using industrially relevant processes, passing lifetime testing following ISOS norms for thin films and with an estimated levelized cost of electricity smaller than 0.03 €/kWh. UNIQUE is coordinated by an industrial partner which aims to fabricate a 10m2 working and outdoor installed carbon-based perovskite solar module array by 2022 and aims at demonstrate the industrial relevance and feasibility of the PV product. UNIQUE will contribute to the development of a European, efficient and sustainable PV technology which can be produced locally.

Projet PROPER : PRintable fully inorganic porous metal Oxide based PERovskite Solar Cells : defining charge selective oxides for high-efficient and low-cost device structure
https://www.jst.go.jp/pr/info/info1...

• Type de projet : EIG Concert Japan
• Coordination : Hyogo University, Seigo Ito
• Date de commencement et durée : 2019-2022
• Résumé : {}

Projet PERCISTAND : Development of all thin-film perovskite-on-chalcogenide tandem photovoltaics
https://percistand.eu/en

• Type de projet :
• Coordination : Interuniversity Micro-Electronics Centre (Imec)
• Partenaire : IPVF (P. Schulz) , Center for Solar Energy and Hydrogen Research (ZSW), Karlsruhe Institute of Technology (KIT), Swiss Federal Laboratories for Materials Science and Technology (Empa), Netherlands Organisation for Applied Scientific Research (TNO), Flemish Institute for Technological Research (VITO), Hasselt University (UHasselt), Solaronix, NICE Solar Energy, Australian National University (ANU) , National Renewable Energy Laboratory (NREL)
• Date de commencement et durée : 2020-2022
• Résumé : Estimations suggest that increased efficiency of photovoltaic (PV) appliances above the Shockley-Queisser single-junction limit is related to the creation of tandem devices. The EU-funded PERCISTAND project will focus on the development of innovative materials and processes for perovskite on chalcogenide tandem appliances. The project will focus on four-terminal tandem solar cell and module prototype testing on glass substrates. The goal is to obtain efficiency, stability and large-scale manufacturability for thin film PV that will be competitive with existing commercial PV technologies. The results of the project will support the EU in regaining predominance in thin film PV research and production. PERCISTAND’s power conversion efficiency targets are : ≥ 20 % semi-transparent perovskite PV, ≥ 10 % NIR-illuminated chalcogenide PV, ≥ 30 % tandem cell and ≥ 25 % tandem module.

Projet SERENADE : Soft pERovskitEs New pAraDigm of semiconductor Engineering

• Type de projet : MAESTRO, Grant no. 2020/38/A/ST3/00214, National Science Center Poland
• Coordination : Paulina PLOCHOCKA, paulina.plochocka lncmi.cnrs.fr, LNCMI, Laboratoire National des Champs Magnétiques Intenses, Toulouse and Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
• Partenaire :
• Date de commencement et durée : 2020 (5 years)
• Résumé : In this project we want to focus on perovskites softness and how to use it to modify their properties. The deformation of perovskites affects the arrangement of atoms within their lattice and thus changes their properties. Under the influence of stresses or compression, we can control their absorption and emission properties, in other words, what color they have or what is the color of emitted light. Due to the softness of perovskites, the degree of modification of their properties by external factors is much greater than in the case of previously known semiconductors. Moreover, the control of the arrangement of atoms in perovskite structures can be obtained not only by external factors, but also can be imposed by the appropriate selection of components used for their synthesis. The goal of this project is to understand how to use softens of perovskite in tailoring their properties. Full understanding of the properties of these materials may mean that in the future they will change people’s everyday lives in a way no less than Silicon, Gallium Nitride or Gallium arsenide.

Projet : Excitons, phonons and polarons in perovskite semiconductors

• Type de projet : OPUS, Grant no. 2019/33/B/ST3/01915, National Science Center Poland
• Coordination : Paulina PLOCHOCKA, paulina.plochocka lncmi.cnrs.fr, LNCMI, Laboratoire National des Champs Magnétiques Intenses, Toulouse and Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wroclaw University of Science and Technology, Wroclaw, Poland
• Partenaire :
• Date de commencement et durée : 2019 (4 years)
• Résumé : Perovskite semiconductors have recently emerged as one of the most intensively studied materials. This is due to their unique properties, which make these materials very promising in photovoltaic applications as well as light emitters. In less than 10 years, perovskite based photovoltaic cells have achieved an efficiency comparable to conventional silicon based solar cells which have been continuously over the last 50 years. Crucially, perovskites can be synthesized using wet chemistry methods, which significantly reduces the cost of their production. Potentially perovskite solar cells can be much cheaper than the current photovoltaic technology. It is interesting that the practical use of these materials precedes the understanding of their basic physical properties. The physics behind the outstanding performance of perovskite based solar cells is currently not understood. The known electronic properties of perovskites seem to contradict everything we have learned about semiconductors in the last half-century. The current perovskite gold-rush has resulted in increased interested in different perovskite-derived materials such as two-dimensional perovskites. These materials are natural quantum wells whose properties can be controlled with extreme flexibility, making the spectrum of their applications extend even further than classical perovskites. Thanks to appropriate engineering, they can be used in photovoltaic cells, light emitting diodes and white light emitters. The goal of this project is to understand what makes perovskites so unique and to establish methods to control and engineer their unique properties. A full understanding of the properties of these materials may mean that in the future they will change people’s everyday lives in the same way as the invention of the Si transistor did.

Projet : The Optoelectronic and Material Properties of Perovskite Semiconductors of Different Dimensions

• Type de projet : Royal Society IEC\R2\170108
• Coordination : S. D. Stranks (University of Cambridge)
• Partenaire : Paulina PLOCHOCKA, paulina.plochocka lncmi.cnrs.fr, LNCMI, Laboratoire National des Champs Magnétiques Intenses, Toulouse
• Date de commencement et durée : 2018 (3 years)
• Résumé : The overall scientific aim of this project is to determine the optoelectronic properties of a range of key perovskites with different dimensionality. Specifically, we aim to determine the exciton binding energy and effective mass as well as characterize the temperature-dependent bandgap and phase properties for thin films of three-dimensional Pb:Sn perovskites, two-dimensional Ruddlesden-Popper perovskites, and zero-dimensional CsPbX3 nanocrystal perovskites. The results should allow us to implements devices with a range of coloured perovskites with different properties. This would be a key step towards a sustainable future in which perovskite films are rapidly spooled from a suitable printer to make colourful solar and light-emitting sheets.

Projet PerXi : Perovskites for spectrometric X-ray imaging
https://attract-eu.com/showroom/pro...

• Type de projet : H2020-Attract
• Coordination : Jean-Marie Verilhac, CEA-LITEN
• Partenaire : CEA, CNRS (Néel), Trixell
• Date de commencement et durée : mai 2019 - oct 2020
• Résumé : Comptage de photons gamma avec des monocristaux de MAPbBr3 pixellisés hybridés sur un circuit de lecture

Projet Peroxis : Innovative perovskite technology for new X-ray imaging systems
https://peroxis-project.eu/

• Type de projet : H2020-ICT05
• Coordination : Jean-Michel Casagrande, CEA-LETI
• Partenaire : CEA, CNRS (Néel), Trixell, Siemens Healthcare, Universitat Jaume I de Castellon, Philips electronics, TNO
• Date de commencement et durée : Jan 2020- Juin 2023
• Résumé : Développement de nouveaux panneaux plats pour la radiographie médicale plus sensible et à plus haute résolution spatiale que les systèmes conventionnels grâce à de nouveaux matériaux semi-conducteurs pérovskites

Projet BOBTANDEM : Band Offset selective Barrier Three Terminal perovskite on silicon high efficiency Tandem Solar Cell
https://bobtandem.wordpress.com/

• Type de projet : Solar-ERANET
• Coordination : GeePs
• Partenaire : ISC Konstanz, EPFL, Delft University of Technology, EDF
• Date de commencement et durée : 2019-2022
• Résumé : (4T) designs have yielded the best results but suffer challenges due to tunnel junctions (2T), grid alignment and interconnection (4T). The BOBTANDEM project proposes a new three terminal selective band offset barrier tandem integrating a high bandgap perovskite solar cell (PSC) on an interdigitated back contact cell (IBC). It uses a selective bandoffset barrier which prevents majority carrier transport from the high bandgap cell to the lower bandgap cell, while allowing minority carriers to be collected. This yields tandem efficiencies without tunnel junctions and grid alignment issues. The result is the collection of current at different potentials from top and bottom bandgap cells, as shown by decoupled quasi-Fermi level separations in top and bottom cells. The project includes leading researchers at the origin of the PSC concept, and leading IBC industrial partners managing mass production of the ZEBRA IBC cell in 2019. These are brought together with the recently patented SBOB concept which has been independently demonstrated in the field of infra-red detectors. These strong industrially validated IBC and SBOB conceptsyield a novel 35% efficient tandem devicewithout the limitation of tunnel junctions, and without the complex optical interconnection issues of 4T designs

Projet 2D-HYPE : Correlated electron and structural dynamics in quasi-2D HYbrid PErovskites

• Type de projet : Collaboration bilatérale ANR/DFG, CE30
• Coordination : Luca Perfetti (LSI) luca.perfetti polytechnique.edu
• Partenaire : LuMIn, Fritz Haber Institute / Department of Physical Chemistry
• Date de commencement et durée : 2021-2023
• Résumé : Hybrid lead halide perovskites are materials that currently attract widespread interest for their application in optoelectronic devices. Their quasi two-dimensional equivalents have shown higher stability than the 3D compounds and offer the possibility to tune the out-of-plane screening properties. Here, we propose to monitor concurrent excited state and screening dynamics on ultrafast timescales. Time resolved photoemission, photoluminescence and high-field THz excitation will provide complementary views on the entangled degrees of freedom. In particular, we aim to follow the exciton formation, quantify the spin-orbit interaction, and control screening effects due to dynamic disorder, cation orientation and electronic confinement ; all of these being potential ingredients for Rashba splitting and ferroelectricity in this material class. Our research project will offer novel insights on non-equilibrium physics and might as well lead to new strategies for materials optimization.

Projet SAMPHAL : SAMs pour perovskites hybrides

• Type de projet : PHC Utique
• Coordination : Philippe LANG, lang u-paris.fr ; ITODYS, Interface Traitements Organisation et Dynamique des Systèmes, Paris
• Partenaire : Pr. Fayçal Kouki, Université de Tunis
• Date de commencement et durée : 2019-2022
• Résumé :

Projet CASHOFET : Hybrid and Organic Transistors with Interface Modified Copper-Aluminum-Silver Electrode

• Type de projet : PHC Star
• Coordination : Philippe LANG, lang u-paris.fr ; ITODYS, Interface Traitements Organisation et Dynamique des Systèmes, Paris
• Partenaire : Pr. Hyeok Kim ; School of Electrical and Computer Engineering Universite de Seoul
• Date de commencement et durée : 2019-2022
• Résumé :

Projet Graphene materials for efficient and low-cost energy conversion and storage

• Type de projet : Programme Hubert Curien PROTEA / Université d’Afrique du Sud
• Coordination : Johann Bouclé (Email : johann.boucle unilim.fr), XLIM, Limoges, France
• Partenaire : Institut de Recherche sur les Céramiques (IRCER) (Limoges, France) et University of South Africa (UNISA), (Pretoria, Afrique du Sud)
• Date de commencement et durée : 2017-2018
• Résumé : Solar power is free and infinite, and solar energy use indeed has major advantages. It is an eco-friendly, sustainable way of energy production. Solar energy is on the rise and many technical advances have made solar cells quite efficient and affordable in recent years. But there’s still a lot of untapped potential in terms of the efficiency of photovoltaic cells. In this sense, Graphene the “nanomaterial of the new millennium,” partly because this super strong, 2D form of carbon with solar-friendly electronic properties could launch the next generation of high efficiency solar cells. Theoretically, graphene based solar panels will have energy efficiency of 60 percent. Graphene already shoes its promising potential in the field of solar cells by the efficiency and stability enhancement in many types of solar cells including perovskite ones. Solar cells require materials that are conductive and allow light to get through, thus benefiting from graphene’s superb conductivity and transparency. Graphene is indeed a great conductor, but it is not very good at collecting the electrical current produced inside the solar cell. Hence, researchers are looking for appropriate ways to modify graphene for this purpose. In this sense, this project aims to developed graphene derivatives and nanocomposites and nanostructured layers to enhance the efficiency and the stability of the fabricated solar cells.

Projet Merlion : Efficient single photon source based on all-inorganic perovskite nanocrystals coupled to microcavities

• Type de projet : Programme PHC (Partenariat Hubert Curien) Merlion
• Coordination : Carole DIEDERICHS, carole.diederichs phys.ens.fr, Laboratoire de Physique de l’Ecole Normale Supérieure (LPENS), Paris.
• Partenaire : Qihua XIONG, SPMS, Nanyang Technological University (NTU), Singapore
• Date de commencement et durée : 2018-2021
• Résumé : The main objective of this project is to investigate the coupling of single perovskite NCs to photonic structures such as planar microcavities and fibered microcavities in order to enhance, redirect and engineer the emission of the single perovskite nanocrystals and realize an efficient single photon source at room temperature. The first major step of this project will be to collect photons emitted by well-characterized and optimized perovskite nanocrystals with high efficiency, without modification of their spontaneous emission rate. At NTU, this will be done by fabricating and studying diluted perovskite nanocrystals samples embedded in a planar microcavity formed of two dielectric Bragg mirrors. The second major step of this project will consist in exploring the potential of single perovskite nanocrystals as solid-state two-level systems for quantum optics applications. At LPENS, this will consist in studying the resonance fluorescence of single perovskite nanocrystals under strictly resonant excitation, which is well known to strongly reduce the decoherence effects such as spectral diffusion. The last major step of this project will be to couple single perovskite nanocrystals to a fibered microcavity in order to achieve a drastic enhancement of the light-matter interaction and obtain an efficient on-demand perovskite single photon source at low and ultimately room temperature.

Projet DesperQD : Rational design of halide perovskite-based quantum dots for photonic applications

• Type de projet : ANR-NRF PRCI CE24
• Coordination (France) : Carole DIEDERICHS, carole.diederichs phys.ens.fr, Laboratoire de Physique de l’Ecole Normale Supérieure (LPENS), Paris
• Coordination (Singapore) : Martial DUCHAMP, MSE, Nanyang Technological University (NTU), Singapore
• Partenaire : IMPMC, Sorbonne Université, Paris
• Date de commencement et durée : 01/06/2021 – 31/05/2024
• Résumé : Colloidal perovskites have attracted attention for potential use in solid-state lighting and single photon emitters. Halide perovskite quantum dots (QDs) offer a cheap and scalable material option for such applications due to their high defect tolerance and high luminescence quantum yield. Despite the huge variety of halide perovskite available, only a few are used in their colloidal form, which can be explained by the difficulty to stabilize QDs with a low surface defect concentration using these materials. We demonstrated excellent defect passivation using amino groups in thin film form, resulting in significantly reduced trap states. We will perform ab initio atomistic simulations to optimize halide perovskite QDs complexes stabilized with capping molecules. The crucial link between the atomic structure and the optical properties will be established at the single quantum dot level using correlative optical and structural techniques

Projet PROCES : Physics of degradation in organic, nanocrystal, and hybrid solar cells

• Type de projet : ANR PRCI France-Allemagne
• Coordination : Zhuoying CHEN (Email : zhuoying.chen espci.fr), Laboratoire de Physique et d’Etude des Matériaux, Paris, France
• Partenaire : TU Dresden, Allemagne
• Date de commencement et durée : September 2018, 36 mois
• Résumé : Facing the rising energy usage worldwide, we urgently need to increase the proportion of electricity generated from clean and renewable energy sources. Organic, colloidal nanocrystal quantum dots (QDs), and hybrid organic-inorganic perovskites are highly promising solution-processable material candidates for "third-generation" solar cells. Their unique material characteristics can lead to flexible, light-weight, low-cost and high-performance solar cells and enable non-conventional solar cell products. While the efficiencies are being improved constantly by intensive research, the Achilles heel of these devices seems to be their environmental instability. Therefore, in this "PROCES" project we aim to (1) identify the fundamental causes of degradation of organic, inorganic nanocrystal and hybrid organic-inorganic thin films ; (2) understand the physical origin of degradation, i.e. the formation of degradation products ; (3) correlate the changes in device characteristics to the causes identified ; and (4) develop strategies to improve material and device stability. It can be anticipated that through this study we will gain fundamental understanding of how different choices of materials (organic, nanocrystal, or hybrid components), their synthetic and surface chemistry, and different device architectures, impact on the device degradation mechanisms.

Projet Theory and Simulation of Nanoscale Phenomena
https://cint.lanl.gov/

• Type de projet : CINT, projet Franco-américain
• Coordination : Claudine KATAN, claudine.katan univ-rennes1.fr, Institut des Sciences Chimiques de Rennes, Rennes, France
• Partenaire : S. TRETIAK, Los Alamos National Laboratory
• Date de commencement, durée : 2014-2022 renouvelable
• Résumé : This project aims to understand the physical properties of 3D but also 2Dhybrid organic/inorganic as well as all inorganic halide perovskites based on complementary theoretical as well as experimental skills available in our home institutions and at CINT/LANL. In fact, lead-based perovskites have been shown to represent a low cost, yet efficient alternative to high-cost/high-performance III-V technologies for solar cells with currently certified record efficiencies exceeding those of multicrystalline Si cells. Obviously, the design of novel and/or efficient devices requires (i) a realistic modeling of underlying material’s properties, including chemical composition, mechanical, electrical and optical features and (ii) their understanding under working conditions. Thus, this project addresses fundamental issues related to perovskite materials, problems related to perovskite based solar cells under working conditions, new architectures such as tandem cells as well as the tuning of the electronic properties at the nano-scale by material engineering to offer new possibilities for device applications including light emitters, lasers, field-effect transistors and radiation detectors.

Projet POLLOC : Polariton logic
http://www.polloc.eu

• Type de projet : H2020 FET OPEN
• Coordination : IBM Zürich
• Partenaire 1 : CNRS , Claudine KATAN, claudine.katan univ-rennes1.fr , Institut des Sciences Chimiques de Rennes, Rennes, France ;Jacky EVEN, Jacky.Even insa-rennes.fr, Institut FOTON (Fonctions Optiques pour les Technologies de l’information), Rennes, France
• Autres partenaires : Univ. of Southampton ; ETH Zürich ; Gesellschaft für Andwandte Mikko une Optoelektronik mit Beschrankterhaftung Amo.
• Date de commencement, durée : 01/10/2020, 36 mois
• Résumé : For energy-efficient computation beyond the current CMOS paradigm, tweaking the current nanoelectronics roadmap will be neither enough nor sustainable, but requires to completely rethink transistor devices and circuits. Leveraging recent breakthroughs in perovskite nanomaterials and room-temperature exciton-polariton devices achieved by the consortium partners, we believe that now the time has come to take this beyond the scieFor energy-efficient computation beyond the current CMOS paradigm, tweaking the current nanoelectronics roadmap will be neither enough nor sustainable, but requires to completely rethink transistor devices and circuits. Leveraging recent breakthroughs in perovskite nanomaterials and room temperature exciton-polariton devices achieved by the consortium partners, we believe that now the time has come to take this beyond the scientific publication level and build a novel technology that can leapfrog established architectures. Within POLLOC we aim for the development of a complete technology platform for universal photonic information processing based on exciton polariton condensates in microcavities with inorganic perovskites. We will validate this new technology with respect to the key parameters power, energy-efficiency, size, frequency, and cost. In the digital processing domain, we aim for optically programmable, cascadable logic gates with less than 100 attojoule switching energy and sub-picosecond switching speed. To fulfil the requirements of this disruptive all-optical device and circuitry approach, POLLOC assembles the whole gamut of necessary expertise from chemistry, physics, theory and technology. The carefully chosen, well balanced consortium consists of leading partners from academia, SME and large end-user with excellent track records that are uniquely positioned to tackle the ambitious goal to unleash the potential disruptive performance gains of this technology and to establish a new kind of digital and analog circuitry paradigm.

Projet PEROCUBE  : High-Performance Large Area Organic Perovskite devices for lighting, energy and Pervasive Communications (LiFi)
https://perocube.eu/

• Type de projet : H2020 NMBP
• Coordination : CSEM Suisse
• Partenaire 1 : CNRS , Claudine KATAN, claudine.katan univ-rennes1.fr , Institut des Sciences Chimiques de Rennes, Rennes, France ;Jacky EVEN, Jacky.Even insa-rennes.fr, Institut FOTON (Fonctions Optiques pour les Technologies de l’information), Rennes, France
• Autres partenaires : VTT, UNIVERSITY OF OXFORD, FRAUNHOFER GESELLSCHAFT , aura light, PANEPISTIMIO PATRON, TNO, VODAFONE INNOVUS , TU WIEN , ALPES LASERS SA , EULAMBIA ADVANCED TECHNOLOGIES , OPTIVA MEDIA, KARADIMAS DIMITRIOS
• Date de commencement, durée : 01/04/2020, 42 mois
• Résumé : PeroCUBE will advance the organometal halide perovskite technology, a class of low-cost but high-quality materials which exhibit strong potential to dominate the OLAE market with the focus given on flexible, lightweight electronic devices. While these materials are extensively studied for the developments of the next generation of solar cells, PeroCUBE will focus on scalable manufacturing processes (roll-to-roll printing) and future market entry of new products. PeroCUBE develops large area lighting panels (PeLEDs) which offer distributed lighting in line with the human-centric lighting concept, such devices surpass OLEDs in terms of performance over cost ratio and will assist the European industry to maintain industrial leadership in lighting. Moreover, PeroCUBE further advances scalable manufacturing of perovskite-based photovoltaic panels (PePVs). Developments on both PeLEDs and PePVs will be also demonstrated in a new generation of Visual Light Communication (VLC) /LiFi technologies. The PeroCUBE developments will be demonstrated in coupled energy-harvesting/light-emitting devices and wearables (bendable wristbands).

Projet DROPIT  : Drop-on demand flexible Optoelectronics & Photovoltaics by means of Lead-Free halide perovskites
https://www.drop-it.eu/

• Type de projet : H2020 FET OPEN DROPIT
• Coordination : Valencia University
• Partenaire : UNIVERSITAT DE VALENCIA (Espagne), UNIVERSITAT DE BARCELONA (Espagne), UNIVERSITAT JAUME I DE CASTELLON (Espagne), EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH (Suisse), FUNDACJA SAULE RESEARCH INSTITUTE (Pologne), SAULE SP ZOO (Pologne), AVANTAMA AG (Suisse), INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE RENNES (France) : coordinateur for FOTON : Laurent Pedesseau
• Date de commencement et durée : 2019-2022
• Résumé : DROP-IT proposes the development of novel lead-free and stable perovskites. Specifically, crystalline structures beyond conventional ABX3 compounds, double-perovskites and rudorffites, will be computationally screened and chemically synthesized with superior properties.
  DROP-IT will develop highly pioneering lead free perovskites (in bulk and nanoscale) by low-cost, high throughput, sustainable, large-scale fabrication techniques on flexible substrates to revolutionize future power, lighting and communication systems.

Projet ALLPOA : From atomic level to layered perovskites for optoelectronic applications

• Type de projet : PRC-CNRS- MOST
• Coordination : Laurent Pedesseau, Alain Rolland
• Partenaire : University of Jerusalem
• Date de commencement et durée : 2019-2021
• Résumé : The synthesis of various layered perovskites materials will be supported by characterization techniques including optical absorption, photoluminescence, transmission electron microscopy, scanning electron microscopy and X-ray diffraction. In parallel, simulations at the atomic level (DFT) will be done in order to predict the electronic, dielectric and excitonic properties.

Projet GOTSOLAR : New technological advances for the third generation of solar cells
http://www.gotsolar.eu/

• Type de projet : H2020 - FETOPEN
• Coordination : Adelio Mendes (Email : mendes fe.up.pt), Faculdade de Engenharia da Universidade do Porto, Departamento de Engenharia Química, Porto, Portugal
• Partenaires : Faculdade de Engenharia da Universidade do Porto (Departamento de Engenharia Química, Porto, Portugal) ; Ecole Polytechnique Fédérale de Lausanne ; Instytut Chemii Fizycznej Polskiej Akademii Nauk ; CNRS (LAC, PPSM, LPS, ISCR, FOTON) ; University of ULM ; Dyesol Ltd and Dyesol UK Ltd ; Efacec Engenharia e Sistemas
• Date de commencement et durée : Janvier 2016, 36 mois
• Résumé : GOTSolar proposes disruptive approaches for the development of highly efficient, long-lasting and environmentally safe PSCs. Metal oxide scaffolds employing perovskites and pigment materials with extraordinary high-efficient light harvesters in conjunction with solid-state HTMs will be developed and assembled together. The obtained materials will be characterized to elucidate the interplay of the mesostructure, the perovskite absorber and the HTM layer. These measurements will be used to understand the circumstances electron and/or hole collection is favourable allowing the optimization of the whole device. This understanding and the developed materials will provide the tools to push the PV performance towards 24 % efficiency for lab-size (ca. 25 mm2) and stable for 500 h under 80°C. In parallel, lead-free light absorbers will be developed aiming a power conversion efficiency of 16 %, also in lab-size cells. These high-efficient devices will be encapsulated using a new hermetically laser assisted glass encapsulation process to enable high-durability and tested under accelerated aging conditions. Following, a device of 10 × 10 cm2 will be built and used for demonstrating the scalability of the developments for producing the first perovskite solar module with potential for 20 years of lifetime.