Large-area epitaxial growth of MoSe₂via an incandescent molybdenum source

Abstract

We have developed an incandescent Mo source to fabricate large-area single-crystalline MoSe 2 thin films. The as-grown MoSe 2 thin films were characterized using transmission electron microscopy, energy dispersive X-ray spectroscopy, atomic force microscopy, Raman spectroscopy, photoluminescence, reflection high energy electron diffraction (RHEED) and angular resolved photoemission spectroscopy (ARPES). A new Raman characteristic peak at 1591 cm -1 was identified. Results from Raman spectroscopy, photoluminescence, RHEED and ARPES studies consistently reveal that large-area single crystalline mono-layer of MoSe 2 could be achieved by this technique. This technique enjoys several advantages over conventional approaches and could be extended to the growth of other two-dimensional layered materials containing a low-vapor-pressure element.

Binding MoSe2 with carbon constrained in carbonous nanosphere towards high-capacity and ultrafast Li/Na-ion storage

“…The lattice spacing is about 0.28 and 0.23nm, corresponding to the (100), (103) faces of 2H-MoSe2. [29,30] In case of FMS, some 1T-MoSe2 phases are observed through that of six Se atoms bonded to one Mo atom in the partial region of the lattice fringe. [31] Note that, the nature of 1T MoSe2 is metallic, facilitating the ions transferring.…”

Recent advances and promise of MXene-based composites as electrode materials for sodium-ion and potassium-ion batteries

“…MoSe 2 consists of a two-dimensional atomic layer of selenium–molybdenum–selenium held together by van der Waals forces, 114,115 with a theoretical capacity of 422 mA h g −1 and an interlayer distance of 0.64 nm. 111 These advantages have positioned MoSe 2 as a prominent research focus.…”

“…100,111 However, the pristine MoS 2 electrode suffers from limited conductivity and the tendency of layer accumulation during charge and discharge. 112 114,115 with a theoretical capacity of 422 mA h g −1 and an interlayer distance of 0.64 nm. 111 These advantages have positioned MoSe 2 as a prominent research focus.…”