Copper Indium Sulphide Colloidal Quantum dots

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• Dr. Kevin Critchley, School of Physics and Astronomy, University of Leeds, Leeds, LS2 9JT. United Kingdom.
• Monday 08 June 2015, 14:15-15:15
• Mott Seminar Room (Mott Building Room 531), Cavendish Laboratory.

If you have a question about this talk, please contact Leona Hope-Coles.

Quantum dots have unique properties which have been intensely studied for many promising technological applications. For example unique properties of semiconductor nanoparticles are ideally suited 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 semiconductor nanoparticles are cadmium-based (CdTe, CdSe, and CdS). These cadmium based quantum dots have excellent optical properties, stability, and monodisperisty. However, increasing global restrictions and lack of biocompatibility of cadmium has lead to questions about the future of quantum dots for many applications. It is therefore essential that we investigate alternative quantum dot materials. We have focused our attention on the development of copper indium sulphide quantum dots, which have an ideal bulk band gap, lower toxicity, small size and ability to control surface functionality. The properties of these recently developed quantum dots are discussed and I will be presenting recent results from SuperSTEM anaylsis.

This talk is part of the Semiconductor Physics Group Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• All Talks (aka the CURE list)
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Mott Seminar Room (Mott Building Room 531), Cavendish Laboratory
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Semiconductor Physics Group Seminars
• Thin Film Magnetic Talks

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