2021/03/31 by Conor P. Cullen, Cormac Ó Coileáin, Cullen, Conor P. +11
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.2104.00061
openalex publication_date 2021/03/31 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
Group-10 transition metal dichalcogenides (TMDs) are rising in prominence\nwithin the highly innovative field of 2D materials. While PtS2 has been\ninvestigated for potential electronic applications, due to its high\ncharge-carrier mobility and strong layer-dependent bandgap, it has proven to be\none of the more difficult TMDs to synthesise. In contrast to most TMDs, Pt has\na significantly more stable monosulfide, the non-layered PtS. The existence of\ntwo stable platinum sulfides, sometimes within the same sample, has resulted in\nmuch confusion between the materials in the literature. Neither of these Pt\nsulfides have been thoroughly characterised as-of-yet. Here we utilise\ntime-efficient, scalable methods to synthesise high-quality thin films of both\nPt sulfides on a variety of substrates. The competing nature of the sulfides\nand limited thermal stability of these materials is demonstrated. We report\npeak-fitted X-ray photoelectron spectra, and Raman spectra using a variety of\nlaser wavelengths, for both materials. This systematic characterisation\nprovides a guide to differentiate between the sulfides using relatively simple\nmethods which is essential to enable future work on these interesting\nmaterials.\n