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Alkylamine Assisted Ultrasound Exfoliation of MoS2 Nanosheets and Organic Photovoltaic Application

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The layered two-dimensional transition metal dichalcogenide MoS2 have attracted great interest in electronic devices and energy conversion areas owning to its graphene like structure and superior optoelectronic properties. Here a liquid sonication method is developed for exfoliation of MoS2 nanosheets with largely increased production yield by introducing alkylamines. The effect of alkylamine structure, initiating MoS2 concentration and sonication time was investigated in terms of exfoliation yield and colloidal stability of the nanosheets. UV-vis absorption spectroscopy, transmission electron microscope, and Raman spectroscopy were used to characterize the exfoliated nanosheets. These MoS2 nanosheets showed good dispersity in common organic solvents with good colloidal stability over months, which renders them the great potential for solution based device fabrication. Hybrid solar cell was constructed with MoS2 nanosheets incorporating with polymer:fullerene as photoactive layer.
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Keywords: ALKYLAMINE; MOS2 NANOSHEETS; ORGANIC PHOTOVOLTAICS; TRANSITION METAL DISULFIDE; TWO-DIMENSIONAL LAYERED MATERIAL; ULTRASOUND EXFOLIATION

Document Type: Short Communication

Publication date: 01 August 2014

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  • Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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