Colorado State University
Nanoparticles are emerging as a material of interest for photovoltaic applications. Current colloidal synthesis methods use long chain coordinating organic molecules as ligands to passivate the surface. Exchanging these ligands for smaller organic molecules or inorganic compounds is required to improve particle interactions for charge carrier transport. Current literature focuses on binary systems and singular ligand exchanges, while the Agrawal group presents a multistep, multiligand hybrid approach. Using a CIGS nanoparticle system, they develop an efficient replacement of oleylamine bound to the surface with both pyridine and diammonium sulfide that work in conjunction and improve device efficiency. This work shows promise for novel, multinary systems such as Cu3PSe4 to exchange ligands at multiple cation sitesEllis, R. G.; Turnley, J. W.; Rokke, D. J.; Fields, J. P.; Alruqobah, E. H.; Deshmukh, S. D.; Kisslinger, K.; Agrawal, R. Hybrid Ligand Exchange of Cu(In,Ga)S2Nanoparticles for Carbon Impurity Removal in Solution-Processed Photovoltaics. Chem. Mater. 2020, 32 (12), 5091–5103. https://doi.org/10.1021/acs.chemmater.0c00966.
Meeting ID: 990 8297 7550