Direct transformation of crystalline MoO3 into few-layers MoS2
Abstract
We fabricate large-area atomically thin MoS2 layers through the direct transformation of crystalline molybdenum MoS2 (MoO3) by sulfurization at relatively low temperatures. The obtained MoS2 sheets are polycrystalline (~10-20 nm single-crystal domain size) with areas of up to 300x300 um2 with 2-4 layers in thickness and show a marked p-type behaviour. The synthesized films are characterized by a combination of complementary techniques: Raman spectroscopy, X-ray diffraction, transmission electron microscopy and electronic transport measurements.
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