Probing the key electrical properties of nanowires using non-contact terahertz spectroscopy

Date	11.10.2013
Hour	10:30
Speaker	Dr. Hannah Joyce, Cambridge University Bio: I'm a postdoctoral researcher in Dr Michael Johnston's group: Oxford Terahertz Photonics. Our group uses terahertz spectroscopy to investigate novel nanomaterials, including nanowires and graphene. I'm particularly interested in semiconductor nanowires (diameter 10 - 100 nm and lengths well over 1 micron). These are made out of III-V materials, such as GaAs, InAs, InP and AlGaAs. The excellent electronic properties of these III-V materials, coupled with the tiny dimensions of the nanowire geometry, make III-V nanowires outstanding candidates for future electronic and optoelectronic devices, including lasers and solar cells. If nanowires are to be useful in future devices, we need to understand their fundamental optical and electronic properties, such as the interaction of light with nanowires and charge carrier transport within nanowires. To investigate these properties, our lab uses terahertz spectroscopy. Terahertz spectroscopy is a powerful, non-destructive and contact-free technique which is ideal for nanowire characterisation. To find out more about this research and for links to my publications, please visit the group's webpage.
Location	MXC315
Category	Conferences - Seminars

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