Hysteresis in polymer/small-molecule mixtures for OPV applications
Organic photovoltaics (OPVs) are candidates for the large-scale capture of solar radiation, due to the potential to process these materials in large areas at low cost. However, considerable challenges exist in terms of lifetime and robustness of performance. This proposal forms part of a wider effort in which our motivation is to complement device optimisation strategies with in-depth studies of model systems, aimed at increasing the fundamental understanding of the materials science within polymer nanocomposite thin-films. This proposal builds on the understanding that we have recently developed by systematically studying equilibrated polymer/small-molecule bilayer systems, using in-situ thermal annealing/neutron reflectometry. Equilibration occurs on annealing at sufficiently high temperature. However, in a number of cases we have observed examples of `non-equilibrium mixingż during isothermal annealing at lower temperatures; here extensive mass transfer occurs, but the system does not achieve thermodynamic equilibrium. The current proposal seeks to systematically investigate this behaviour, which is of key importance for working OPVs.
The data is currently only available to download if you are a member of the proposal team.
The recommended format for citing this dataset in a research publication is in the following format:
HIGGINS Anthony M.; CABRAL Joao T.; GUTFREUND Philipp; Andrew J. Parnell and SAERBECK Thomas. (2023). Hysteresis in polymer/small-molecule mixtures for OPV applications. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.9-11-2090
This data is not yet public
This data is not yet public
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