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Nano-solar cell by controlled dimerisation of nanocrystals

Research Area: Chemistry, spectroscopy, electrochemistry, materials science, colloid science, surface chemistry

Supervisor: Prof Thomas Nann

Description: The synthesis of various types of monodispersed, inorganic nanoparticles can be achieved by well-established procedures. However the controlled assembly of different types of nanoparticles into complex and functional nano-systems is still a major challenge. Even the simplest type of nano-system a "hetero-dimer" consisting of two different types of nanoparticles; e.g. a semiconductor quantum dot and a gold nanoparticle - has not yet been realised.

The aim of this project is to find synthesis methods for the mono-functionalisation of nanoparticles (basically any nanoparticle) and the assembly of hetero-dimers. Our goal is to synthesise hetero-dimers of gold and quantum dots as well as two different quantum dots (nano-solar cells). The project also includes the spectro-electrochemical and morphological characterisation of the products. The work will build on extensive preliminary experience of the research group and does involve international collaborations. The successful candidate will be required to spend short periods of time overseas undertaking research with collaborators.

Methods
- wet-chemical synthesis of nanoparticles
- surface functionalisation of nanoparticles and other materials
- electronic spectroscopy
- various electrochemical methods including spectro-electrochemistry
- electron microscopy (especially transmission electron microscopy)
- standard analytical methods

References
1. Liu, X. et al. Monofunctional Gold Nanoparticles Prepared via a Noncovalent-Interaction-Based Solid-Phase Modification Approach. Small 2, 1126-1129 (2006).
2 Sung, K., Mosley, D.W., Peelle, B.R., Zhang, S. & Jacobson, J.M. Synthesis of Monofunctionalized Gold Nanoparticles by Fmoc Solid-Phase Reactions. Journal of the American Chemical Society 126, 5064-5065 (2004).
3 Nann, T. et al. Water Splitting by Visible Light: A Nanophotocathode for Hydrogen Production. Angew. Chem. Int. Ed. 49, 1574-1577 (2010).

Funding: All students should apply for an IWRI fully-funded scholarship.

International students should also apply for an International Postgraduate Research Scholarship (IPRS) and a UniSA President's Scholarship (UPS). To be eligible for UPS, applicants must have a supervisor willing to nominate them for consideration.

Australian students should also apply for an Australian Postgraduate Award (APA) and a UniSA Australian Postgraduate Research Award (USAAPRA).

International and national travel and collaboration will be involved in this project and students should be prepared to travel overseas for short periods of focused research.

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