Prof Yoshitaka OKADA

Prof Yoshitaka OKADA

The University of Tokyo, Japan

Progress of Quantum Dot Intermediate-Band Solar Cells

On-going challenges and topics in the solar energy conversion using quantum dot solar cells are reviewed. In quantum dot intermediate band solar cells (QD-IBSCs), control of carrier dynamics with particular emphasis on the two-step inter-subband absorption/recombination processes is paramount to achieving higher photocurrent production and hence higher efficiencies. Significant efforts and a rapid progress have been made in the device physics as well as practical demonstration of high-efficiency IBSC using QDs.



Yoshitaka Okada is a Professor at the Research Center for Advanced Science and Technology (RCAST), The University of Tokyo. He received his BSc in electronic and electrical engineering from the University of London, in 1984, and his MEng and PhD degrees in electronic engineering from The University of Tokyo in 1987 and 1990 respectively. He was appointed as a Visiting Assistant Professor at Stanford University in 1995-96, Visiting Fellow at Imperial College London in 2006, and at the Cavendish Laboratory, University of Cambridge in 2015. His research interests include epitaxial crystal growth of III-V-N dilute nitrides and low-dimensional quantum structures for applications to high efficiency solar cells.