Journal
APPLIED PHYSICS LETTERS
Volume 107, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4935545
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Funding
- German Research Foundation (DFG) within the priority program SPP 1355 Elementary Processes of Organic Solar Cells
- Baden-Wurttemberg Stiftung
- European Union
- Carl-Zeiss-Stiftung
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The length-scale of phase separation in organic semiconductor donor-acceptor mixtures, while being crucially important for applications, is a non-trivial parameter to control in non-equilibrium thin film growth. We present a comprehensive study of all the important parameters that can be used to tailor the length-scale of phase separation in organic semiconductor mixtures. We employed different substrate temperatures, different growth rates, time-dependent deposition rates, and surface functionalization layers. We found not only that the substrate temperature is most prominent in influencing the length-scale of phase separation in the studied parameter range, but also that other routes can be used to tailor this length-scale. (C) 2015 AIP Publishing LLC.
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