Controlling the morphology of bulk heterojunction (BHJ) films using mixtures of additives: a SANS study.

DOI

Through a combination of small angle neutron scattering, ion-beam analysis and ellipsometry we have recently demonstrated that in organic photovoltaic devices (OPVs) the additive 1,8-diiodooctane (DIO) largely remains in the film after spin-coating acting as a plasticizer to increase molecular mobility and allowing morphological improvement of the film with a consequent increase in power conversion efficiency (PCE) of the OPV device. This new finding opens new perspectives into the morphology control of BHJs, namely through the use of mixtures of additives possessing different affinities towards the polymer and the fullerene which will allow us to tune the affinity of the additive mixture to the polymer and fullerene and therefore to tune and optimize the corresponding morphology and PCE - a strategy we propose to explore on this proposal.

Identifier
DOI https://doi.org/10.5286/ISIS.E.85179130
Metadata Access https://icatisis.esc.rl.ac.uk/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:icatisis.esc.rl.ac.uk:inv/85179130
Provenance
Creator Dr Hugo Gaspar; Dr Steve King; Dr Gabriel Bernardo; Dr Andrew Parnell; Professor Richard Jones
Publisher ISIS Neutron and Muon Source
Publication Year 2020
Rights CC-BY Attribution 4.0 International; https://creativecommons.org/licenses/by/4.0/
OpenAccess true
Contact isisdata(at)stfc.ac.uk
Representation
Resource Type Dataset
Discipline Photon- and Neutron Geosciences
Temporal Coverage Begin 2017-03-26T00:00:00Z
Temporal Coverage End 2017-03-26T23:00:00Z