Photoenergy Conversion Systems and Materials for the Next Generation solar cells

Researchers & Research Theme

  • Phase 1
  • Phase 2
  • Phase 3
  • Musubu Ichikawa
  • Hideo Ohkita
  • Keisuke Ohdaira
  • Koichi Okamoto
  • Akinori Saeki
  • Qing Shen
  • Tetsuya Taima
  • Yasuhiro Tachibana
  • Setsuhisa Tanabe
  • Takeshi Tayagaki
  • Donglin Jiang
  • Yoshitaro Nose
  • Kazuhiro Marumoto
  • Hiroyuki Yoshida

Multiple Exciton Generation in Semiconductor Quantum Dots and its Application to Solar Cells

Qing Shen

Research Site
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.