Flagellene solutions processing ofthin films: towards thermodynamically stable organic photovoltaics

DOI

Controlling nanophase structure and stability of such bulk heterojunction (BHJ) remains a major challenge and large solar cell efficiencies have hitherto only been reported for small areas (cm2), which are well below the required roll-to-toll manufacturing scale. Currently, BHJ structures are formed by solution processing and casting of phase separated, co-crystallising components, yielding non-equilibrium morphologies. The lack of stability of such morphologies is accentuated by considerable environmental susceptibility and inevitable exposure to harsh environmental cycles Polymer-substituted fullerenes (flagellenes), are analogous to co-polymers of a fullerene and polymer, and offer an attractive route to generating thermodynamically stable nanophase separated morphologies for OPVs. Flagellene solutions exhibit distinct rheological changes from shear thickening to thinning depending on polymer substitute molecular mass. This proposal seeks to measure the conformation of flagellene solutions, including micelle formation, and to correlate this behaviour to thin film formation in order to assess their viability as equilibrium OPV materials.

Identifier
DOI https://doi.org/10.5291/ILL-DATA.9-11-1647
Metadata Access https://data.ill.fr/openaire/oai?verb=GetRecord&metadataPrefix=oai_datacite&identifier=10.5291/ILL-DATA.9-11-1647
Provenance
Creator Nedoma, Alisyn; Guilbert, Anne; Lopez, Carlos Gonzalez; Bucknall, David; Wong, Him Cheng; Cabral, Joao; Porcar, Lionel; Gutfreund, Philipp; Dattani, Rajeev
Publisher Institut Laue-Langevin
Publication Year 2014
Rights OpenAccess; info:eu-repo/semantics/openAccess
OpenAccess true
Representation
Resource Type Dataset
Size 6 GB
Version 1
Discipline Particles, Nuclei and Fields