Physics Seminar: Dr Kevin Critchley

We were visited in November 2016 by Dr Kevin Critchley from the University of Leeds, who gave an excellent seminar on ‘Excited State Dynamics in Colloidal Quantum Dots’. Many thanks to Kevin for his very interesting talk.

Computational Physics Group

Date: Wednesday 30th of November 2016, 16:30.
Location: MC0025 (Media, Humanities & Technology Building).

‘Excited State Dynamics in Colloidal Quantum dots’

by Dr. Kevin Critchley,
School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT, UK.

Abstract:

Kevin CritchleySemiconductor nanoparticles have unique properties, which have been intensely studied for many promising technological applications over the last few decades.  For example unique properties of semiconductor nanoparticles are ideally suited for back lighting displays and for fluorescence imaging.  Advanced fluorescence imaging will provide a high-resolution means of detecting diseased cells; tracking nano-encapsulated drugs; and studying intracellular mechanisms.  These semiconductor nanoparticles are commonly known as quantum dots – derived from the fact that decreasing the size of the nanoparticles introduces quantum confinement of the charge carriers leading to an increased band-gap.  By tuning the size of the semiconductor one can therefore tune the emission wavelength.   To date, the most studied…

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