Self-assembly of discotic liquid crystal decorated ZnO nanoparticles for efficient hybrid solar cells

摘要: Efficient hybrid solar cells based on a blend of poly(3-hexylthiophene) (P3HT) and discotic liquid crystal ligands dithiol-functionalized triphenylene (TP-S) modified zinc oxide (ZnO) nanoparticles (TP-S@ZnO) were systematically investigated. The TP-S-modified ZnO possess well-defined dispersibility, especially after annealing under the liquid-crystalline state (130 °C), originating from help supramolecular self-assembly TP-S discs. Discotic improve compatibility between P3HT polymer nanoparticles, which is beneficial for enhanced charge separation transfer efficiency. On other hand, interfacial molecules can play great role in ordering crystallinity chains. X-ray diffraction (XRD) wide-angle scattering (WAXS) studies indicate that spontaneous promotes chains to overall, power conversion efficiency (PCE) polymer/ZnO increased 0.46% 0.95% was with thermal annealing. As expected, DLC molecular interface modification provide viable interesting method promote large area polymers nanocrystals, subsequently improving performance photovoltaic devices.