Molybdenum disulfide material is expected to be brought into the atomic -level semiconductor technology

Sohu North Carolina State University researchers said recently that they have developed atomic -level manufacture of high quality semiconductor thin film ( film thickness of only a single atom diameter ) of new technology. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Assistant professor of materials science and engineering Caolin You ( transliteration ) said that the new technology can reduce the size of the existing semiconductor technology to the atomic level , including lasers, light emitting diodes and computer chips. Copper Lead Zinc Tin nickel , China Nonferrous network, a small metal , scrap metal.
Researchers studied the material is Molybdenum crucible sulfide , which is an inexpensive semiconductor materials, electronic and optical properties of the semiconductor industry with the current materials used for similar . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. However , molybdenum disulfide and other semiconductor materials are different and because it is formed as a single atom monolayer layered growth , while the film without losing the original material properties. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
In the new technique, the researchers sulfur and molybdenum chloride powder placed in the furnace and the temperature gradually raised to 850 degrees Celsius , then the two powders appear evaporation ( vaporization ) and the occurrence of a chemical reaction to form molybdenum sulfide . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. To maintain high molybdenum sulfide can be deposited on the substrate , forming a thin film of molybdenum sulfide . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
Caolin You said the key to their success is to find a new growth mechanism of molybdenum disulfide , namely self-limiting growth by controlling the pressure and the vapor pressure high-temperature furnace carved to precisely control the thickness of the layer of molybdenum sulfide . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
Suspended in the air divider represents the atoms or molecules aggregate into a solid precipitated on the substrate trends ; vapor pressure represents a solid substrate vaporized atoms or molecules into the air trend. Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. Is obtained on the substrate layer , molybdenum sulfide vapor partial pressure must be above ; partial pressure is higher, in the end portion of the deposited layer of the more molybdenum sulfide . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. If the partial pressure is higher than in the single-layer film formed on the substrate in vapor pressure , but lower than the vapor pressure of the formation of two-layer film , then the partial pressure and vapor pressure to ensure that this balance between the molybdenum sulfide in a single layer film formation after the film growth stops automatically ceased to multilayer development . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. This is the " self-limiting growth of the film ." Copper Lead Zinc Tin nickel , China Nonferrous network, a small metal , scrap metal.
Partial pressure of the furnace by adjusting the temperature to control the amount of molybdenum chloride , molybdenum furnace, the more the higher the voltage divider . Copper Lead Zinc Tin nickel , China Nonferrous network, a small metal , scrap metal. Caolin You said that the use of the technology , they each received a chip size, atomic diameters thick molybdenum sulfide layer film . Copper Lead Zinc Tin nickel , China Nonferrous network, a small metal , scrap metal. Also obtained by changing the partial pressure of 2-4 atoms thick molybdenum sulfide film diameter . Copper Lead Zinc Tin  nickel , China Nonferrous network, a small metal , scrap metal