https://ogma.newcastle.edu.au/vital/access/ /manager/Index en-au 5 https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:39758 Tue 21 Jun 2022 09:29:05 AEST ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:43843 Tue 04 Oct 2022 11:46:23 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:7141 Sat 24 Mar 2018 10:44:33 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:9676 Sat 24 Mar 2018 08:39:16 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:2443 Sat 24 Mar 2018 08:26:53 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:46422 rational choice of solvent approach as opposed to the usual trial-and-error methods. We demonstrate here that we can achieve a bicontinuous interpenetrating network with nanoscale phase separation for the chosen donor–acceptor material system poly[2,3-bis-(3-octyloxyphenyl)quinoxaline-5,8-diyl-alt-thiophene-2,5-diyl]:phenyl-C₆₁ butyric acid methyl ester (TQ1:PC₆₁BM) when processing from green solvent ink formulations. This structure is achieved by first calculating the Hansen solubility parameters (HSP) of the donor and acceptor materials, followed by careful choice of solvents with selective relative solubilities for the two materials based on the desired order of precipitation necessary for forming a nanostructured interdigitated network morphology. We found that the relative distances in Hansen space (R_a) between TQ1 and the primary solvent, on the one hand, and PC₆₁BM and the primary solvent, on the other hand, could be correlated to the donor–acceptor morphology for the formulations based on the solvents d-limonene, anisole, and 2-methyl anisole, as well as the halogenated reference solvent o-dichlorobenzene. This nanostructured blend film morphology was characterised with scanning transmission X-ray microscopy (STXM) and transmission electron microscopy (TEM), and the film surface composition was analysed by near edge X-ray absorption fine structure (NEXAFS) spectroscopy. Hansen solubility theory, based on solution thermodynamics, has been used and we propose an HSP-based method that is a general platform for the rational design of ink formulations for solution-based organic electronics, in particular facilitating the green solvent transition of organic photovoltaics. Our results show that the bulk heterojunction morphology for a donor–acceptor system processed from customised solvent mixtures can be predicted by the HSP-based method with good reliability.]]> Mon 29 Jan 2024 18:05:22 AEDT ]]> https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55973 Fri 12 Jul 2024 14:31:02 AEST ]]>