Nanostructured Photovoltaics research is carried out in the Department of Electronic Materials Engineering of the Research School of Physics and Engineering. Our research is focused on developing novel concepts and technologies for high efficiency nanostructured solar cells by combining the excellent properties of III-V semiconductors as photovoltaic materials with unique properties of nanostructures such as quantum dots and nanowires. Nanowires provide a paradigm shift in photovoltaics by decoupling light absorption from carrier collection paths, which lead to more efficient charge extraction. Quantum dots are predicted to form an intermediate band within the bandgap to absorb lower energy photons and also able to lead to multi-exciton generation.
A suite of facilities in epitaxial growth, material and device characterisation is available in the Department of Electronic Materials Engineering, such as MOCVD, PLD, ion implantation, RBS, XRD, AFM, Raman, PL, PLE, PR, DLTS, solar simulator and laser/photodetector testing. In addition, state-of the-art device processing tools such FIB, EBL, mask aligner, nanoimprint lithography, ALD, ICP-RIE, PECVD, e-beam/thermal evaporation and sputter deposition are available within the Australian National Fabrication Facility.
Our expertise in III-V semiconductors, nanowires and quantum dots together with the excellent device fabrication facilities allows us to exploit the unique properties of these nanostructures for high efficiency photovoltaic applications.