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Graphene, a typical material with two dimensions, is widely used and highly sought-after by scientists and the industry. What exactly is a 2-dimensional material? Simple, two-dimensional material is a non-nanoscale (between 1 and 100 nm) material in which electrons are able to move freely in two directions (planar movement). Examples of such materials include: graphene; boron nitride; transition metal compounds, (disulfide); Molybdenum; tungsten diulfide; tungsten silicidide, black phosphorus.
2D materials can be used in a variety of fields. In combination with the authors' previous introductions, some examples include: spintronics (printed electronics), flexible electronics (microelectronics), memory, processors and hyperlenses. , quantum dots, sensors, semiconductor manufacturing, NFC, medical, etc.
Molybdenum diulfide, also known as MoS2, is a two-dimensional material that deserves our attention. Molybdenum diulfide, which is composed of two atoms of molybdenum with one atom of sulfur, has only three atoms of thickness. Molybdenum diulfide and graphene are almost identical in thickness, however, molybdenum diulfide's band gap is 1.8 eV whereas graphene has no band gap. The author of this article once stated that the US Department of Energy Berkeley Lab had accurately measured band gap of semiconductor two-dimensional materials molybdenum sulfide and revealed a powerful tuning mechanism.
In addition, the molybdenum diulfide has an electron mobility that is 100 cm2 /vs. (ie. 100 electrons per centimeter square per volt), although it's much lower than crystal. The silicon has an electron transfer of 1400 cm2/vs but has a higher migration rate than ultra-thin semiconductors and amorphous silica.
Molybdenum diulfide, with its excellent semiconductor characteristics and small size and ultra-thinness, is ideal for use in flexible electronics, solar cells, LEDs and lasers.
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