The session covered the use of ultrafast spectroscopy for developing nanotechnology for optoelectronics, and specifically semiconductor nanowires.
Hakan Selvi has had a paper accepted for publication in RSC Nanoscale describing SOI graphene-based photodetectors. In a collaboration between the Echtermeyer group and the Parkinson group at the University of Manchester, Hakan showed that by modifying the shape and thickness of the silicon, the electrical and optical characteristics could be optimized. In particular, a near 1GHz device response was demonstrated by suppressing diffusion currents.
A new paper describing the development and characterisation of high-speed Graphene-Silicon Schottky photodetectors has been published in RSC Nanoscale.
The work, led by PhD student Hakan Selvi and Tim Echtermeyer includes high-speed device characterisation performed in the Parkinson lab.
The new devices are broadband, high-speed, large-area and low-cost photodetectors which make use of the high transparancy and conductivity of graphene. These devices pave the way towards real-world applications for Graphene-Silicon detectors.
The paper is available at http://dx.doi.org/10.1039/C7NR09591K