2019 Materials science lecture series: advanced materials - 18 March 2019
Mar 18, 2019 - 10.30 uur
Agoralaan Gebouw D
Lokaal Room C110
Mevrouw Aslihan BABAYIGIT
MRS/E-MRS joint chapter of Hasselt University: 2019 materials science lecture series: advanced materials.
Speaker: Jörg Ackerman - Aix-Marseille university, Centre of interdisciplinaire de nanosciences de Marseille (CINaM), UMR CNRS 7325, Marseille (France)
Key parameters for large scale processing of fully printed high efficiency organic solar modules
Monday 18 March 2019, 10:30
Room C110, Building D, Hasselt University, Campus Diepenbeek.
Polymer solar cells are a very promising approach for future cost-effective energy conversion systems. The efficiency of these solar cells has increased enormously in the last 12 months to over 17% due to the development of navel non-fullerene acceptors. However, all recent published polymer solar cells with record efficiencies over 10% are processed on very small areas of typically 3 mm2 using a device structure including evaporated layers and electrodes. Therefore, the processing of these highly efficient devices into large-scale fully printed solar modules is today the major challenge, besides the improvement of device stability, in the field of organic photovoltaics. This seminar is dedicated to our recent efforts to develop material and processing strategies in the field of polymer solar cells that allow industrial printing of high efficiency solar modules. To achieve this goal, robust thick film solution processing of the photoactive layer as well as the hole and electron extraction layers in air is required. In this respect, the development of optimized ZnO nanoparticle inks for solution-treated electron extraction layers is presented. The influence of ligand modification, Al doping and nanoscale morphology on the electronic performance of ZnO-based EELs and their compatibility with robust thick film processing is discussed. The use of ternary blends as tools for processing highly efficient and thick photoactive layers is also discussed. In addition, air and centimeter-size processing of polymer solar cells by spin coating will be discussed. Finally, our latest results will be presented, which combine these efforts in the development of fully inkjet-printed polymer solar cells and modules using fullerene and non-fullerene acceptors with an efficiency of over 7%.