Semiconductor Nanowires Grown On Graphene

CrayoNano introduces GaAs nanowires on graphene, a patented hybrid material with competitive properties. Semiconductors grown on graphene are expected to become the basis for new types of device systems, and ultimately change the semiconductor industry.

The new patented hybrid material offers excellent optoelectronic properties, Professor Helge Weman says. He is the CTO and co-founder of CrayoNano AS. –We have managed to combine low cost, transparency and flexibility in our new electrode.

The patented method of growing semiconductor nanowires on the atomically thin graphene uses MBE (Molecular Beam Epitaxy) to grow the nanowires.

– We do not see this as a new product, Weman states, –This is a template for a new production method for semiconductor devices. We expect solar cells and light emitting diodes to be first in line when future applications are planned.

Sunny outlook for nanowires

– Graphene is experiencing tremendous attention worldwide, Weman says. – Companies like IBM and Samsung are driving the development in the search for a replacement for silicon in electronics as well as for new applications, for instance flexible touch screens for mobile phones. Well, they need not wait any more. Our invention fits perfectly with the production machinery they already have. We make it easy for them to upgrade consumer electronics to a level where design has no limits.

This invention is thus thought to be an enabler for a future platform of devices for electronics and optoelectronics. One possible device with a very large market potential is nanowire solar cells. Such solar cells have the potential to be efficient, cheap and flexible at the same time. Into the future one can also imagine self-powered nano-machines and advanced 3D integrated circuits built on graphene and semiconductor nanowires, enabling smaller and more efficient electronics.

Weman is imagining flexible self-powered consumer electronics integrated into anything from clothes to notepads, and of course traditional cell phones, tablets and exercise accessories.

–The proposed semiconductors grown on graphene could become the basis for new types of device systems, and change the semiconductor industry by introducing graphene as a preferred substrate for many applications” says Weman.

The underlying results have recently been published in the American journal Nano Letters (http://pubs.acs.org/doi/abs/10.1021/nl3018115). Nano Letters reports on fundamental research in all branches of nanoscience and nanotechnology (pubs.acs.org/NanoLett).



CrayoNano AS contact persons:

Prof. Helge Weman, founder and CTO                   +47 918 97 658

Morten Frøseth, CEO                                                     +47 402 26 551

About CrayoNano AS and NTNU

CrayoNano AS originates from III-V semiconductor nanowire research done at the Department of Electronics and Telecommunications at the Norwegian University of Science and Technology (NTNU) that has been strongly supported from the Research Council of Norway since 2007. The project is strongly embedded in NTNU NanoLab, MBE Lab and Nano-Photonics Laboratory. The founders, Professor Helge Weman and Professor Bjørn-Ove Fimland, are both responsible for important research groups and labs at NTNU.

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