Laboratoire MOLTECH-Anjou




Project Name: HELIOS (High-Efficiency Long-lived Organic Solar modules)

Partners: MOLTECH-Anjou (Angers, coordination) ; IMS (Bordeaux ; coordination) A3M (ENSCM Montpellier) ;  ICCF (Clermont-Ferrand)  ARMOR (Industrie La Chevrolière 44)

Coordinator at MOLTECH-Anjou: P. Hudhomme

Team(s) involved: SOMaF

Funding: ANR (Projet de Recherche Collaboratif, PRC) ; industrial  challenge: 1060 k€ (Angers 202 k€)               


Starting:01 Jan 2013 ; End: 30 June 2018

Website :

Graphical Abstract:



The HELIOS project focuses on the industrial large-scale production of organic solar modules with the aim of improving their lifetime by  stabilizing the nano-sized morphology of the bulk heterojunction (BHJ), as a key-parameter to retain initial photovoltaic performances. HELIOS aims to develop a technology based on chemical crosslinking recently invented during the previous project CEPHORCAS (ANR-HABISOL-2010-003). Crosslinking allows the attachment by covalent bonding of semiconducting molecules in order to reinforced the material. By controlling the involved chemical processes, no loss of performance is caused by crosslinking technology which significantly increases the lifetime of organic photovoltaic (OPV) cells versus thermal and / or photochemical stresses. Academic partners AM2N-ICG (Montpellier) and MOLTECH-Anjou (Angers) are working on the development of new compounds that are crosslinking additives to be added universally in any semiconductors.  Additives of second generation are expected to enhance the BHJ morphology self-organization and to become photo-active in order to participate in the collection / conversion of solar photons enabling improved PV efficiency. The crosslinking processes, fabrication and characterization of OPV cells are studied in IMS (Bordeaux). ICCF (Clermont-Ferrand) studies the photochemical and thermal ageing of materials and solar cells. ARMOR is manufacturing large-area prototypes with increased lifetimes using flexible technologies incorporating crosslinking agents.