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In-Situ TEM Observations of the Crystallization Process of Solution-Prepared MoS2 Amorphous Particles

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Abstract:

The crystallization of polymer-mixed amorphous molybdenum sulfide was observed in-situ by a TEM equipped with a heated specimen holder. High electron beam irradiation induced the formation of a crystal structure with a lattice spacing of 0.62 nm, which corresponds to the layer spacing of MoS2. With a lower electron dose, a possible new crystal structure of molybdenum sulfide with several fringe spacings was identified at room temperature. An ordered layered structure of MoS2 appeared after annealing at 600 °C. The completely different crystal phase found here might be responsible for the high temperature required for the formation of the MoS2 layered structure.

Keywords: AMORPHOUS; CRYSTALLIZATION; IN-SITU TEM; LATTICE SPACING; MOLYBDENUM DISULFIDE

Document Type: Research Article

DOI: http://dx.doi.org/10.1166/jnn.2009.1370

Publication date: November 1, 2009

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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