Scientists develop first transistor siliceen




Researchers have for the first time managed to make a transistor based siliceen. This material is as silicon-alternative ‘to graphene seen but siliceen seemed stable enough to be effectively provided for transistors.

Graphene is composed of a single layer of carbon atoms in a kind of chicken wire grid. The material was seen as a promising successor to silicon for use in transistors but the bandgap was too small; Roughly said, graphene can not ‘out’ to be put. Siliceen had outcome offer by combining the advantages of silicon and graphene; the material consists of a layer of silicon atoms having a chicken wire structure, albeit with a more bent and therefore more complex arrangement. Siliceen in turn, however, suffers from problems with stability. The material reacts under almost any conditions rapidly with oxygen and then falls apart.

Researchers at the University of Texas are, nevertheless, able to make a transistor of the material by using a new method in which siliceen is hardly exposed to air. They showed that purpose in a vacuum chamber, hot vapor of silicon atoms condense on a crystalline structure of silver.

Thus a low siliceen, protected by a thin layer of silver, to which they added alumina as an additional protective layer. Then they were able to gently scrape some of the money to create two islands as source and drain could act, with the strip siliceen between. Hence the results behaved, at room temperature, as a field-effect transistor.

The team are now looking at new structures and methods, in the hope that the material could eventually be used for efficient and fast computer chips. One of the properties that should be investigated further, is why the electrical conductivity of the siliceen the production method used in much lower than expected. It is unclear how the research result relates to the claim of the University of Twente, that siliceen can not be stable in meaningful quantities produced as crystalline silicon structures siliceen the ‘eat’.

The research of the University of Texas this week appeared in the scientific journal Nature Nanotechnology.


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