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Combinatorial Effects of Solvent Type, Thermal Annealing and Al Electrode on the Morphology of P3HT:PCBM Layer

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Poly(3-hexylthiophene):phenyl-C61-butyric acid methyl ester (P3HT:PCBM) films were spin-cast using either pure chlorobenzene as the solvent or a chlorobenzene:dichlorobenzene solvent mixture. Compared to films fabricated using pure chlorobenzene, those prepared using the mixed solvent showed better crystallinity of the P3HT domains and a higher initial tensile strain. Thermal annealing relieved the tensile strain and increasing the domain crystallinity. The films spin-cast using the solvent mixture exhibited minimal Al atom diffusion into the P3HT:PCBM layer during thermal annealing. The presence of an Al layer enhanced the grazing incidence small angle X-ray scattering contrast between the P3HT and PCBM domains at the Al layer interface.
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Keywords: AL METAL; ANNEALING; MIXED SOLVENT; P3HT:PCBM; SMALL ANGLE X-RAY SCATTERING; X-RAY REFLECTIVITY

Document Type: Research Article

Publication date: March 1, 2016

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  • Science of Advanced Materials (SAM) is an interdisciplinary peer-reviewed journal consolidating research activities in all aspects of advanced materials in the fields of science, engineering and medicine into a single and unique reference source. SAM provides the means for materials scientists, chemists, physicists, biologists, engineers, ceramicists, metallurgists, theoreticians and technocrats to publish original research articles as reviews with author's photo and short biography, full research articles and communications of important new scientific and technological findings, encompassing the fundamental and applied research in all latest aspects of advanced materials.
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