The combination of the nonsolvent-induced phase separation (NIPS) process with a solvent vapor annealing (SVA) treatment is used to produce asymmetric and hydrophobic thick films having different long-range ordered network nanostructures, which are inaccessible via currently available membrane fabrication methods. We show that the disordered phase generated by NIPS on the material top surface...

Organic semiconducting polymers are attractive because of their competitive price and low processability requirements. Aqueous solutions of these polymers can be deposited with a variety of processes to make thin, flexible, and transparent films. Such films can be used as transparent electrodes in organic light-emitting diodes or organic photovoltaic cells. Poly(3,4-ethylene...

Prof Emeritus Scientific Coordinator

An efficient metal-free formulation of a hole transport material (HTM) based on an ionic liquid polymer is developed for n–i–p perovskite solar cells (PSCs), to address reproducibility issues related to the use of complex dopant mixtures based on lithium salts and cobalt coordination complexes. The conductivity of the HTM is thus significantly improved by 4 orders of magnitude, up to 1.9 ×...

Relaxor ferroelectric polymers exhibit high k at their structural phase transition around room temperature. They are particularly attractive as gate dielectric in organic field effect transistor (OFET). Nevertheless, their applications are limited due to their low thermal stability. A polymer blend system with a high and thermally stable dielectric constant is demonstrated by mixing terpolymer...

Photopatternable fluoropolymers with high dielectric constant were prepared by direct azidation of commercially available poly(vinylidene fluoride-trifluoroethylene-chlorotrifluoroethylene). The produced fluoropolymers exhibit very high dielectric constant, while being photopatternable without the use of any additives. These cross-linked polymers appear to have reduced crystallinity compared to...