2020/07/28 by Д. А. Чареев, Chareev, Dmitriy A., Polina V. Evstigneeva +11 · 1 citation
Engineering · Materials Science · #2D Materials and Applications #Chalcogenide Semiconductor Thin Films #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Quantum Dots Synthesis And Properties
paper · pdf · doi:10.48550/arxiv.2007.14167
openalex publication_date 2020/07/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Due to their physical properties and potential applications in energy\nconversion and storage, transition metal dichalcogenides (TMDs) have garnered\nsubstantial interest in recent years. Amongst this class of materials, TMDs\nbased on molybdenum, tungsten, sulfur and selenium are particularly attractive\ndue to their semiconducting properties and the availability of bottom-up\nsynthesis techniques. Here we report a method which yields high quality\ncrystals of transition metal diselenide and ditelluride compounds (PtTe2,\nPdTe2, NiTe2, TaTe2, TiTe2, RuTe2, PtSe2, PdSe2, NbSe2, TiSe2, VSe2, ReSe2)\nfrom their solid solutions, via vapor deposition from a metal-saturated\nchalcogen melt. Additionally, we show the synthesis of rare-earth metal\npoly-chalcogenides and NbS2 crystals using the aforementioned process. Most of\nthe obtained crystals have a layered CdI2 structure. We have investigated the\nphysical properties of selected crystals and compared them to state-of-the-art\nfindings reported in the literature. Remarkably, the charge density wave\ntransition in 1T-TiSe2 and 2H-NbSe2 crystals is well-defined at TCDW ~ 200 K\nand ~ 33 K, respectively. Angle-resolved photoelectron spectroscopy and\nelectron diffraction are used to directly access the electronic and crystal\nstructures of PtTe2 single crystals, and yield state-of-the-art measurements.\n