DROP-IT is a 3years H2020 European project starting in November 2019. DROP-IT “DRop-on demand flexible Optoelectronics & Photovoltaics by means of Lead-Free halide perovskITes”. FOTON Institute - INSA Rennes and ISCR are part of the DROP-IT consortium (8 European partners). DROP-IT will combine optoelectronics and photonics in a single flexible drop-on demand inkjet technology platform by means of exploiting the enormous potential of lead-free perovskite materials. FOTON Institute – INSA Rennes will be in charge of the simulation task of the project. The first year has been mainly focusing on 2 tasks i) the state-of-art bibliography and analysis of the lead-free materials for solar cells, leds,photocatalysts, and then ii) the exploration of new lead-free materials by Density Functional Theory. DROP IT consortium : UNIVERSITAT DE VALENCIA (Spain), UNIVERSITAT DE BARCELONA (Spain), UNIVERSITAT JAUME I DE CASTELLON (Spain), EIDGENOESSISCHE TECHNISCHE HOCHSCHULE ZUERICH (Switzerland), FUNDACJA SAULE RESEARCH INSTITUTE (Poland), SAULE SP ZOO (Poland), AVANTAMA AG (Switzerland), INSTITUT NATIONAL DES SCIENCES APPLIQUEES DE RENNES (France) Disclaimer excluding Agency responsibility: This project has received funding from the European Union’s Horizon 2020 research and innovation Programme under the grant agreement No 862656. The information and views set out in the abstracts and presentations are those of the authors and do not necessarily reflect the official opinion of the European Union. Neither the European Union institutions and bodies nor any person acting on their behalf may be held responsible for the use which may be made of the information contained herein.