Multiple Exciton Generation in Semiconductor Quantum Dots and its Application to Solar Cells
Qing Shen
Associate Professor, Graduate School of Informatics and Engineering, The University of Electro-Communications
Abstract
Recently, it was found that multiple exciton generation (MEG) in semiconductor quantum dots (QDs) could occur efficiently than in bulk semiconductor. Such efficient MEG in semiconductor QDs has been expected to be applied to solar cells for improving the energy conversion efficiency. In this study, semiconductor QDs will be used as light harvesters in sensitized nanocrystalline TiO2 solar cells. The energy conversion efficiency will be improved by (1) finding the mechanism of MEG and the optimized experimental conditions for high efficient MEG in semiconductor QDs and (2) modifying and controlling the nano-interfaces in the semiconductor QDs sensitized solar cells.