Graphene is an example of a two-dimensional materials and it has been widely utilized in many areas. Now, let’s clarify what two-dimensional materials are. A two-dimensional material refers to materials in that electrons move freely (planar) on nonnanoscale (1–100 nm), and in two dimensions. These materials include: graphene; boron nutride; transition metal compound (disulfide); Molybdenum; tungsten dilicide; tungsten disulfide; black phosphorus.
2D materials offer many potential applications. Combining all the information from previous authors, you can see the following: spintronics. , quantum dots, sensors, semiconductor manufacturing, NFC, medical, etc.
Molybdenum Disulfide (MoS2) – a common two-dimensional materials – is worthy of our attention. Molybdenum dioxide is composed of both a molybdenum, as well as a sulfur, atom. The atoms are only three in number. It is about the same thickness as graphene. But molybdenum-disulfide’s band gap at 1.8 eV is larger than that of graphene. Here, it was mentioned by the author that the Berkeley Lab of US Department of Energy had measured the Band Gap of Molybdenum Disulfide, a semiconductor two-dimensional substance. They also discovered a powerful tuning mechanism.
The electron mobility of molybdenum-dioxide is also a measure of electron speed (the velocity of electrons moving in a planar surface). Its value is around 100 cm 2/vs. (Ie 100 electrons per sq. centimeter per voltage), but it is much higher than that of the crystal. This semiconductor has a 1400 cm2/vs electron transfer, but has a greater migration rate that amorphous silicon or other ultra thin semiconductors.
Molybdenum dioxide is an excellent choice for application in transistors. Flexible electronics, LEDs. lasers. Solar cells.
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