A CrayoNano research team has developed a new technique that enables growth of vertically aligned and self-catalyzed nanowires on graphite and graphene. This new hybrid material has excellent properties and is verified by demonstrating the growth of vertically aligned GaAs nanowires on graphene. Founded in June 2012 to develop and commercialise this new hybrid semiconductor technology, CrayoNano holds exclusive licenses for all relevant fields of use. The Trondheim-based CrayoNano originated from several years of research at the Department of Electronics and Telecommunications at the NTNUthe Norwegian University of Science and Technology. Inventors Professor Dr Helge Weman and Professor Dr BjornOve Fimland are both responsible for research groups and labs at NTNU. Vertical semiconductor nanowires grown on free-standing graphene can function as a template in order to fabricate flexible, transparent electrodes for nanowire solar cells and light emitting diodes, as well create new types of hybrid heterostructures. The responsivity of the GaAs nanowire device is estimated to be ?30 mA/W which is 3 orders of magnitude larger than previously reported for a single GaAs nanowire. The nanowires demonstrate no degradation in the optoelectronic material quality, as compared to GaAs nanowires grown on GaAs substrates.
The technology platform is protected through 5 priority patents and the underlying results have recently been published in the American journal Nano Letters CrayoNano is now seeking industrial partners for further development of applications within the following fields: