Photoluminescence Quenching of CdSe Core/Shell Quantum Dots by Hole Transporting Materials

• DOI: 10.1021/jp808190v
• Publication Date: 2009-02-03T19:36:06Z
• Authors: Youlin Zhang; Pengtao Jing; Qinghui Zeng; Yajuan Sun; Huaipeng Su; Y. Andrew Wang; Xianggui Kong; Jialong Zhao; Hong Zhang
• Keywords: 02 engineering and technology; 540; 0210 nano-technology; 530

Photoluminescence quenching of colloidal CdSe core/shell quantum dots (QDs) with CdS, ZnS and CdS/CdZnS/ZnS shells in the presence hole-transporting materials (HTMs) is studied by means steady-state time-resolved photoluminescence spectroscopy. Static surprisingly found to play an even more important role PL process than dynamic one originating from a hole transfer QDs HTMs. The static efficiency single CdS 3 6 monolayers much larger that multilayer shell. experimental results are for understanding control pathways using multishell structures.