Journal
LANGMUIR
Volume 29, Issue 8, Pages 2490-2497Publisher
AMER CHEMICAL SOC
DOI: 10.1021/la3048483
Keywords
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Funding
- Bavarian Collaborative Research Project Solar technologies go Hybrid (SolTec) via TUM.solar
- University of Jordan
- Erasmus Mundus MaMaSELF program
- Bavarian State Ministry of Sciences, Research and Arts
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Gold (Au) nanoparticles are deposited from aqueous solution onto one of the most used conductive polymers, namely poly(3-hexylthiophene) (P3HT), using airbrush deposition. We report on the structure formation and packing of the Au nanoparticles after a 5 s spray cycle. In situ grazing incidence small-angle X-ray scattering (GISAXS) measurements with 20 ms time resolution allow a real-time observation of the emergence and evolution of the microstructure during a spray cycle and subsequent solvent evaporation. The results reveal multistage nanoscale ordering of the Au nanoparticles during the spray cycle. Further ex situ atomic force microscopy measurements of the sprayed films showed the formation of Au monolayer islands on top of the polymer film. Our study suggests that the solvent-substrate interaction as well as solvent evaporation kinetics are important factors that need to be taken into consideration in order to grow a compact uniform monolayer film for the fabrication of ultrathin films using airbrush deposition.
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