13:30 〜 15:30
▼ [15p-PB1-4] Photoexcited Hole Cooling Dynamics in PbSe/CdSe Core/Shell Heterostructure Quantum Dots
キーワード：quantum dot
Core/shell quantum dot (QD), in which the shell layer can not only improve the stability of core QD, but also result in totally new physical properties of the overall heterostructure. For instance, C. M. Cirloganu et al [1] found that the PbSe/CdSe quasi-type-II core/shell QD showed almost a fourfold increase in the multiple exciton generation (MEG) yield over core PbSe QD. However, photoexcited carrier dynamics in those quasi-type II QDs are not clear. In this study, we used transient absorption (TA) spectroscopy to reveal the photoexcited carrier dynamics in the PbSe/CdSe core/shell quasi-type-II QDs.