Browsing Articole ştiinţifice by Author "JOHNSTON, M. B."

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Conductivity of nanoporous InP membranes investigated using terahertz spectroscopy

MERCHANT, S. K. E.; LLOYD-HUGHES, J.; SIRBU, L.; TIGINYANU, I. M.; PARKINSON, P.; HERZ, L. M.; JOHNSTON, M. B. (IOP Publishing, 2008)

We have investigated the terahertz conductivity of extrinsic and photoexcited electrons in nanoporous indium phosphide (InP) at different pore densities and orientations. The form of electronic transport in the film was ...
Terahertz conductivity of magnetoexcitons and electrons in semiconductor nanostructures

LLOYD-HUGHES, J.; FAIST, J.; BEERE, H. E.; RITCHIE, D. A.; SIRBU, L.; TIGINYANU, I. M.; MERCHANT, S. K. M.; JOHNSTON, M. B. (Society of Photo-Optical Instrumentation Engineers, SPIE, 2009)

Using terahertz time-domain spectroscopy we investigate how quantum, magnetic and electrostatic confinement alters the photoconductivity of nanostructured semiconductors. In 2.0 THz and 2.9THz GaAs/AlGaAs quantum cascade ...
Terahertz photoconductivity of mobile electrons in nanoporous InP honeycombs

LLOYD-HUGHES, J.; MERCHANT, S. K. E.; SIRBU, L.; TIGINYANU, I. M.; JOHNSTON, M. B. (American Physical Society, 2008)

Nanostructured semiconductors with favorable optoelectronic properties can be created by electrochemical etching, a fabrication process that is scalable for mass market applications. Using terahertz photoconductivity ...

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