Direct Transformation of Crystalline MoO3 into Few-Layers MoS2

Felix Carrascoso; Gabriel Sanchez-Santolino; Chun-wei Hsu; Norbert M. Nemes; Almudena Torres-Pardo; Patricia Gant; Federico J. Mompean; Kourosh Kalantar-zadeh; Jose A. Alonso; Mar Garcian-Hernandez; Riccardo Frisenda; Andres Castellanos-Gomez

doi:10.20944/preprints202004.0300.v1

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Carrascoso, F.; Sánchez-Santolino, G.; Hsu, C.-W.; Nemes, N.M.; Torres-Pardo, A.; Gant, P.; Mompeán, F.J.; Kalantar-zadeh, K.; Alonso, J.A.; García-Hernández, M.; Frisenda, R.; Castellanos-Gomez, A. Direct Transformation of Crystalline MoO₃ into Few-Layers MoS₂. Materials 2020, 13, 2293. Carrascoso, F.; Sánchez-Santolino, G.; Hsu, C.-W.; Nemes, N.M.; Torres-Pardo, A.; Gant, P.; Mompeán, F.J.; Kalantar-zadeh, K.; Alonso, J.A.; García-Hernández, M.; Frisenda, R.; Castellanos-Gomez, A. Direct Transformation of Crystalline MoO3 into Few-Layers MoS2. Materials 2020, 13, 2293.

Abstract

We fabricate large-area atomically thin MoS₂ layers through the direct transformation of crystalline molybdenum trioxide (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 300×300 µm² 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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Direct Transformation of Crystalline MoO3 into Few-Layers MoS2

Abstract

Keywords

Subject

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Direct Transformation of Crystalline MoO₃ into Few-Layers MoS₂