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Growing Semiconductors on Graphene for Thinner, Cheaper Electronics

In 2010, at the Norwegian University of Science and Technology, Professor Helge Weman and post-doctoral fellow Dong-Chul Kim led breakthrough research in growing semiconductor nanowires on graphene. Now, the team is working on translating the results of their research into an initial prototype with their startup company, CrayoNano. Currently, electronics and solar cells use thick silicon substrates and technology companies struggle to produce silicon-based electronics that are smaller than those on the market. Graphene could be be the prime candidate for replacing silicon. Bendable mobile phones, self-powered nanodevices, improved solar cells and LEDs, and windows that generate electricity are a few potential products that could spring from the union of semiconductors and graphene.

Topics:
Electronic Components Electronics & Computers Green Design & Manufacturing LEDs Lighting Nanotechnology Power Semiconductors & ICs Solar Power

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    Transcript

    00:00:01 in this animation video I will describe to you our patent protected method of epital semiconductor nonwire growth on graphine you will see how Galos nairus grow on graphine inside the ultra high vacuum MB machine here inside the MB chamber we first open the flange to the heated gallium source so that an atomic Flux Of gallium atoms is directed and then

    00:00:26 absorbed on the substrate which in our case is an atomic thing sheet of graphine here we see how the Gallum atoms absorb on the graphine surface it turns out that the gallium atoms tend to stick to each other and form small gallium droplets on the graphine surface at the bottom of the Gallum droplet next to the graphine surface the Gallum atoms tried to match the carbon

    00:00:51 hexagons by arranging themselves into a very unique hexagonal pattern at this time we now also open the flench to the orenic sword so that both gallium and arsic atoms are directed simultaneously towards the graphine surface now gallium and arsenic atoms hit and enter the Gallum droplet down at the bottom inside the

    00:01:15 Gallum droplet the gallium and orsic atoms chemically bind together and forms a gallamite crystal layer by layer in this way vertical gimos n wires with a hexagonal cross-section cross up longer and longer under the gallium [Music] droplet it only takes a few minutes of growth before they reach the desired length of 1

    00:01:47 micrometer traditionally Nono wires or thin films are grown on a very thick and expensive semiconductor substrate of about half a mm or 500 micrometer thick even though the nonwire which will be the active part of the final device is only about 1 micromet thin now because of our invention of epital Nona grow and graphine the substrate only needs to be an atom thin

    00:02:12 this means that not only huge cost savings can be made but the graphine substrate is also flexible conductive as well as transparent to light the pacal growth configuration of the semiconductor graphine hybrid could thus become the basis for new types of device systems and changed the semiconductor industry by introducing graphine as a preferred substrate for

    00:02:34 many applications like efficient and flexible solar cells and light emitting diodes this technology will now be developed by our startup company crayon [Music] Nano