12-15 July 2011
Saint George Hotel
Africa/Johannesburg timezone

Solution-processed CuSe Quantum Dots Photovoltaics

15 Jul 2011, 08:15


Oral Presentation Track A - Condensed Matter Physics and Material Science CMPMS1


Dr Nosipho Moloto (University of the Witwatersrand)


There have been tremendous inputs into improving the efficiencies of nanostructure solar cells by extending their absorption wavelength to the near-infrared. This can potentially be achieved by using colloidal nanocrystal quantum dots as the light-harvesting material, as their optical band gap can be tuned to a desired range. Copper selenide is an interesting semiconductor with a bulk band gap of 1.39 eV. It has been shown to have good electrical conductivity properties. It is also used as a precursor for the preparation of CIDS solar cells. Herein, colloidal CuSe nanocrystals are synthesized using a modified solvothermal method and characterized with absorption and photoluminescence spectroscopy, XRD and HRTEM. The resultant nanocrystals are then used as the active material in a Schottky and hybrid solar cell.

Would you like to <br> submit a short paper <br> for the Conference <br> Proceedings (Yes / No)? Yes
Level (Hons, MSc, <br> &nbsp; PhD, other)? Other, post PhD
Consider for a student <br> &nbsp; award (Yes / No)? No

Primary author

Dr Nosipho Moloto (University of the Witwatersrand)


Mr Hendry Puggens (University of the Witwatersrand)

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