Properties of MoS2


Bulk properties: MoS2 occurs naturally as the mineral 'molybdenite.' In its bulk form, it appears as a dark, shiny solid. The weak interlayer interactions allow sheets to easily slide over one another, so it is often used as a lubricant. It can also be used as an alternative to graphite in high-vacuum applications, but it does have a lower maximum operating temperature than graphite. Bulk MoS2 is a semiconductor with an indirect bandgap of ~1.2eV and is, therefore, of limited interest to the optoelectronics industry. Optical and electrical properties: Individual layers of MoS2 have radically different properties compared to the bulk. It removes interlayer interactions and confines electrons into a single plane, resulting in a direct bandgap with an increased energy of ~1.89eV (visible red). A single monolayer of MoS2 can absorb 10% of incident light with energy above the bandgap. Compared to a bulk crystal, a 1000-fold increase in photoluminescence intensity is observed, but it remains relatively weak - with a photoluminescence quantum yield of about 0.4%. However, this can be dramatically increased (to over 95%) by removing defects responsible for non-radiative recombination. If you are looking for high quality, high purity, and cost-effective Molybdenum disulfide, or if you require the latest price of Molybdenum disulfide, please feel free to email contact mis-asia.

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